This is something I bump against over and over again: so-called evergreen browsers that can’t actually be updated because of operating system limits.
From what I could gather, the version of Chrome was tied to ChromeOS which couldn’t be updated because of the hardware. No new ChromeOS meant no new Chrome which meant stuck at version 76.
But what about the iPad? I discovered that my Mom’s iPad was a 1st generation iPad Air. Apple stopped supporting that device in iOS 12, which means it was stuck with whatever version of Safari last shipped with iOS 12.
So I had two older browsers that couldn’t be updated. It was device obsolescence because you couldn’t install the latest browser.
Websites stop working and the only solution is to buy a whole new device.