The "weaponization of complexity" as you call it is simply "work is done by those who show up".
Google, Microsoft, Mozilla, Apple, etc took the horribly dastardly approach of "participating" and then "doing the work".
The horror.
Microsoft gave up because it wasn't worth it when someone else was willing to do the work. It was not something that was adding value to them by them doing it themselves anymore.
It's hilarious to try to pain this as some evil dastardly thing where they badly tried to keep up and just failed because it's just so hard and costly vs something where it just wasn't worth them paying for because they didn't derive enough value from it.
Remind me which earnings call it was where they were saying "you know, we are going to issue rough q4 guidance because we think it's going to be really hard to implement these next 3 CSS features"
The cost of keeping up for them, even now, if they started again, would be a rounding error in any MS VP's overall equity refresh budget (IE the money they are giving out in stock per year to employees in their org). So please, let's not pretend it's too "hard" or "expensive" for them.
In the end, the world is 99% built by those who show up and do it. That's how this "weaponization of complexity" happened - people showed up and tried to solve problems. The world evolved. They tried to keep moving forward as that happened.
If you think you can do it better, or that it doesn't need to be this complex, or whatever, awesome. show up and do it, like everyone else did.
The world has never been built by those throwing rocks from the sidelines, no matter how much they want it to be, and no matter how much they try to paint the hard problem-solving work of others as "weaponization of complexity".
Calling it that is just plain lazy. Almost all improvements and backwards compatibility shims make it harder for someone else to implement from scratch. That's because the primary goal is usually to help users.
I mean, why stop with the web with this argument?
How come the Go folks weaponized the Go language by adding generics? By making it harder for me to implement my own, they've weaponized it against me!
I can't believe nobody has stopped their dastardly deeds.