I'm sorry, but you don't get to tell me what I need to comfortably run a piece of software on my computer. Despite whatever utilization metrics are claimed, Chrome runs like a wounded animal whenever I get into the territory of a dozen windows with approximately a dozen tabs each. If I try to do something unimaginable like open a Google sheet and a Meet call at the same time on my work provided laptop equipped with 16 GB of RAM, it's a disaster.
Then maybe it's something other than memory. Despite having a bunch of extensions running, the only problem I have ever had with 3-400 open tabs is the mental effort of managing them.
I'm honestly perplexed I don't have more problems as the machine I do most of my reading/browsing on is more than a decade old and doesn't even have a GPU. Plus I nearly always have 2 messaging apps, a pdf viewer, and 1-3 other browsers running simultaneously, maybe a logging app too. All running on Windows 10, it's not some turbocharged Gentoo installation or anything.
I'm curious, what if you try running Chrome's Task Manager (shift-escape on Windows, idk what you're using). Cause I noticed things like gmail are pretty well behaved and just sit there, whereas Twitter takes up nearly twice as much memory and grabs a bunch of CPU time every 20 seconds. If you're not running an ad-blocker I would expect that any site with heavy ads/tracking is impacting performance.
I work in advertising, so I think using Ublock Origin is hypocritical
I sincerely think that your industry makes the internet way worse than it needs to be.
Twitter back in the day had a web page (m.twitter.com) which worked everywhere, even under Links2 with the graphical UI.
If the reason it's "the user can't be tracked equally without a JS Big Brother behemoth", then they don't understand how cookies can be used for that, or by just parsing the user tweets and preferences.
My Carbon X1 with 8 i7 cores isn't broken. Rather, the internet browser I use largely for work has issues managing a large collection of tabs that include a few heavy web-apps (gmail, meet, sheets and play music).