It still is a rule of thumb, you dont need DDR5 for a gaming computer let alone 64gb. A low end am4 cpu + 16gb of DD4 3600 and a decent gpu will beat a ps5 in performance and cost. I dont understand why the headline made this strange comparison.
On a PC you may have the bright idea to open a browser along with the game for walkthroughs/hints. Or Discord to chat with your friends while gaming.
Due to javascript bloat, your working set size goes from 16 to 48-64 Gb in a jiffy.
You do have the option to open up Discord voice chats on PS5. Amazing what Discord could do when forced to actually write something efficient.
Youtube also exists as an app, and maybe you can trick the heavily gimped built in browser to go there as well, although last I checked it wasn't trivial.
Maybe 6 once. Try not to leave it for weeks displaying the memes/cat photos channels…