Comment by ufmace
It's the most real example anyone's provided so far.
I tested it on both regular Chrome with UBO Lite and Firefix with stock full UBO, and both show ads on Twitch. I haven't looked into how to actually block them, but I'll take your word that that's the only way to do it in both cases.
It seems to me, both cases require some extra action to block ads. Full requires you to dig up a userscript and how to load it into UBO, while Lite requires you to find and install a whole extra extensions. Doesn't seem like that huge of a difference to me. I suppose some may disagree, but it's not at all hitting my bar for declarations others have made like that Lite is inadequate or Google is terrible for disabling Manifest V2.