Meh. For a long time people have been saying stuff like "devops is dead, long live the platform engineer" exactly because the figuring-out-what-works phase of wild experimentation is over and there are unambiguous "winners" for technology in most every niche. You've listed lots of commercial vendors and alternate choices for backends/front-ends here as if to illustrate a lack of standardization in tools/frameworks, but is it really?

Whereas churn in web-dev seems self-inflected.. devops practitioners don't actually create vendor/platform fragmentation, they just deal with it after someone else wants the new trendy thing. Devops is remarkably standardized anyway even in the face of that, as evidenced by the fact that there's going to be a terraform'y way to work with almost all of the vendors/platforms you mentioned. And mentioning 20 ways to use kubernetes glosses over the fact that.. it's all just kubernetes! Another amazing example of standardization and a clear "winner" for tech stack in niche.