I built my original Windows 10 gaming PC in 2015, with 16GB RAM. I recently re-rolled it as a CachyOS gaming PC, and had the same RAM. All was fine. VRAM on the other hand, yeah, go big or don't bother. I thought I was getting a great deal on a RTX 5050 with 8GB VRAM. It is woefully inadequate for modern AAA games, for sure. Thank goodness for protondb.com though.
RTX 5090 is only $4000 right now... /s
YMMV depending on the types of games you play. GPU-bound ones (most, these days) will suffer without a good GPU. CPU-bound games (Civilization series comes to mind) are easier to build for.
I was hoping the RAM shortage and resulting VRAM price hikes would force the game development industry to renew a focus on performance and efficiency in resource utilization, but I think they are just trying to ride out this likely multi-year RAM price gouging we're currently in.
It's roughly twice the size of the base app, if it's the same as Edge, which on my machine is 1.82GB. It's shady as hell, but "massive" is doing a lot of lifting in this headline.