I don't know if you skipped to read the rest of the article you linked, where it states exactly why AMP would be needed as part of the ranking factors.
- All the things that AMP brings as a "side effect" of the more restricted markup, are part of the "Core Web Vitals" that google now priorititzes
And the nonsense about AMP being headed for obsolescence, really? People(skeptics) were saying that in 2016, and since then it has only grown and become better.
In the past year, the support for AMP pages in the top 10M domains has almost doubled (source)
- Why are the top 10M domains in the world adapting to a standard that, according to you, is becoming obsolete?
Hmm I'm not sure about you, but you seem a bit biased, having your own XenForo Native Mobile Apps extension you are selling..
What do you mean with the "weird(in-coherent) scrolling behavior."? I haven't noticed anything like that on any AMP page, and I have a nasty eye for details being a webdev myself..
Anyway, if you don't personally like AMP that is fine, you can choose to skip it.
- The fact still remains that fast pages (can't beat AMP in speed) will show higher up in search results (I'm not talking about "Top stories")
As for your addon question, I spent like 5s googling to find this, which should be what you are asking for: https://www.ghacks.net/2019/08/29/disable-amp-in-firefox-and-chrome-with-the-redirect-amp-to-html-extension/
There still hasn't been any good argument against AMP apart from biased / Personal (I don't like it) reasons, while the benefits are very clear from an "I own a forum and want to grow my community"-point of view.
- And let's face it, most people on here own/manage some forum and want to grow their communities... right?
