Those people aren't the lowest except in pay. Those people are the engineers, the teachers, and the administrators. They execute actual functions that directly benefit society. These are the people that prevent crime through their support of the community. It's like calling the foundation of a building the lowest function of a building. That may be true on the surface, but the metaphor quickly breaks down.
There is another lowest of the low in government that does little in the way of support, unless you're one of the elite. The lowest rung of the government ladder are the people whose job it is to punitively punish people for breaking the laws. They do not prevent any crimes, and the courts have ruled that they are shielded from any responsibility in that regard. They protect inequity between the rich and the poor. They are trained to discriminate and profile. Their very fraternity is rooted in tribal exclusion, us vs. them. They even desecrate the national flag as a symbol of that fraternity. Sometimes that insult even gets worn as part of their official uniform. They restrict and opress rights granted by the law at the whim of politics and oligarchs. They are licensed to murder, with immunity from responsibility. They are encouraged to remain ignorant of the laws that they are tasked with enforcing and they wear that ignorance as a legal shield against consequence and accountability. And yet these gangs of murderous thugs are routinely paid better than any of the others. They are called heroes when they do the bare minimum. They are applauded for showing the bare minimum of humanity.
If this government were a family with the state and federal administration as the parents, then the teachers/engineers/administrators would be the older siblings, aunts, and uncles. The police would rule that house through fear like a toddler on a sugar high with a gun. Occasionally that toddler may shit itself, steal from the cookie jar, or murder a loved one. But all is quickly forgiven because after all they are a only toddler.
If someone wrote this article in the early 90s, it would be called "Why I ditched the radio, and how I created my own CD collection." I think rephrasing it that way really shines a light on why it's mostly still comparing apples and oranges.
I have a pretty substantial collection of music hovering around 5,000 albums or 1.6TB (mostly lossless FLAC these days, but still some moldy old mp3s and ogg vorbis files from my youth). I'm not even counting the physical media I still hold on to. I still use Spotify for discovery and playlists. I don't think the depth and breadth of my library will ever match the depth and breadth of the music that I want to listen to in the very next moment. Lots of times I want to listen to the stuff I'm familiar with, and I do that using my own library. But, when I want to: remember a song I heard in the wild, share a holiday playlist with friends, make an obscurely themed playlist of songs features peaches, preview a musician's or band's stuff, discover other things that musician has collaborated on, or simply discover new music; I still use Spotify.
There are (or were) bits and pieces out there (many that pre-date Spotify) that can do some of these things. Last.fm (fka Audioscrobbler) was good for tracking listening habits to compare and share with others, it helped a little with discovery. I used allmusic.com a lot long ago to discover the artists that inspired the artists I was listening. If I wanted to share a playlist, I made a mixtape (really it was burning a mix CD). But, all of these collected information only, not the music itself. If I wanted to actually hear a new song, I had to go somewhere and find it first. That often meant literally traveling somewhere else or ordering from a catalog and waiting for delivery. Every new music discovery was a bet made with real dollars that I would actually enjoy the thing or listen to it more than once. Even after napster paved the way for free listening via piracy, one still had to work to actually find the music.
Spotify (and similar services) finally collected (almost) all of it under one app, so that I could discover and listen seemlessly. It is instant gratification music discovery. I'll never give up my self hosted collection, but I also don't have much hope that any self curated collection will be able to complete with the way that I use Spotify. Spotify is just the new radio. It's never the end of my listening though. Just like with radio, when I find something I like enough, then I can expend the energy (or more often expend the money as directly with the band as I can) to add it to my collection.