dunno about others
but i will use Librewolf (97 which is FF 97 based), as long as "web allows it", i have it spoofed to show some gigantic version of crome
so in my eyes the only problem might arise from java-script engine later in future, coz html 5 / css 3 aren't doing anything new
and if that fails, i will try with Falkon (ex QupZilla) based on QtWebkit
and if that fails then i guess Palemoon is last option ?