In general is that you can't ever trust them apart from a few very large ones.

A redirect extension is ripe for the usual blackmarket shenanigans.

I have my own omni extension made up of copy pasted open source extensions. I normally wouldn’t go through the effort but web browsing is crucial and frequent enough to be worth it and it took less than a weekend to get it up and running, especially with Plasmo. It’s also another reason to prefer Firefox and MV2

It's the auto-update behaviour of browsers that should probably be criticised here, rather than having general distrust of all extension authors.