(edit) oh no, I've said something bad about the lesser evil, and the people who have made it their identity to violently cum all over the first thing that isn't owned by Google are after me. I hope the pipe bomb hitman is at least polite.
It's a shame the web got so complex that it has become unfeasible to make a browser engine anywhere near full compliance for anyone that isn't a large company.
Chromium is to the modern internet what Internet Explorer was in the mid 2000s. It's not as stagnant (thankfully), but as far as market share and giving one oversized tech giant arguably too much power over the internet, we've basically come full circle.
It's unfortunately a relatively complex thing to answer.
First off, there's the license. The source code is published under a BSD-3 license, which is very permissive, meaning in theory, anyone could fork the repository and be completely free from any control of Google.
However, this is not really a thing in reality.
First of all, for your fork to have any meaning at all, you need people to use it. They're not going to use your fork, if it's unclear whether you're trustworthy and in particular, you need to offer something better than Google and do so for a while, so that people feel like they can rely on you.
Google is also not bound by its license to make future updates available under the same license. If your fork would become too successful, they could re-license and then it would genuinely just become a competition for who has more dev power.
But with the additional caveat that if you don't also re-license, then Google can continue taking your work and provide theirs on top.
Google also has a load of tracking infrastructure and an ad business, which makes Chrome a valuable investment for them.
There's very few other organizations for which it would make sense to invest similarly much into Chromium development (and those organizations will then have similarly awful motivations).
Which means a hard fork, i.e. without dependence on future updates from Google, is pretty much not going to happen.
Additionally, you'd need a solid number of users in your fork, if you want to have any say in terms of web standards. So long as Google Chrome has a majority of users, Google can easily introduce proprietary standards, which webdevs will gladly lap up.
So, all in all, Google does have a pretty tight grip.
Presumably, they don't put any incriminating stuff into Chromium, so that they steer clear of even faint attempts to fork (and because they can just put those into Google Chrome instead).
But there's plenty room for interpretation in most web standards, so they can implement them in their interest, and then the forks have to stick to that implement, if they want to remain compatible with the web.
Basically, a corporation owning such an open source project removes almost all positive things associated with "open source". They're using it for "look we are good" much more than for "we actually care about open source community".
Yeah I wish Vivaldi wasn't Chromium-based, because I love all the bells and whistles of Vivaldi so much. But like, at the end of the day it's still partly contributing to the Chromium dominance of the web, so I still have to default to Firefox as my primary.
Same sentiment here. Coming from Opera (in the days it had its own engine) and having been using Vivaldi as my daily since its first public preview, native mouse gestures is the thing I miss the most from Firefox.
I know that the folks at Vivaldi are pretty strongly against the manifest v3 thing, but seems like at one point they'll have to fold.
I went from Firefox, to Chrome (came as default, didn’t swap because browser was fine), to Vivaldi which was really neat when I started learning Chrome was going to become suck, then back to good old Firefox when I learned that Vivaldi is Chromium.
Icefox I've heard about and LIbrewolf I use actively.
The latter has frustrations with Video Downloadheper. IDK WTF to do to make it work. Sticks me to fucking Firefox to rip. Icefox recommender said it should work with VDH but they don't really know and I ain't had a chance to work with it.
Have you asked the Video Download helper team? I had an issue before where it wasn't picking up a media after an update and asked them and they fixed it by the next update. They're really good with support.