TLS 1.2 is still widely supported; the standard dates from 2008, but didn't really get pushed hard IMHO until right before HeartBleed (April 2014); and there was the SHA1 certificate deprecation that took effect in 2016. A lot of things that got updated to use sha2 certs also got updated to use TLS 1.2, and should work fine with most https out there.
Chrome had support for WebP pretty early, because Google, but caniuse.com says 2018 for Edge, 2019 for Firefox and 2020 for Safari. There's a lot of potential software out there that works in a post-2016 timeframe, but not with WebP.
> media codecs are often updated as part of the OS
I thought that was mainly true in the Apple world. Does that apply to Windows and Linux too? (As in, I thought many browsers implement their own codecs)
Chrome had support for WebP pretty early, because Google, but caniuse.com says 2018 for Edge, 2019 for Firefox and 2020 for Safari. There's a lot of potential software out there that works in a post-2016 timeframe, but not with WebP.