Not even speaking about all the ads in the default YouTube app without a subscription.
The app is basically useless in my opinion. It defaults to freaking 240p for every video. My phone is definitively not the problem, also not the Internet connection. Watching in Firefox on the same connection gives me normal expected quality.
This was better on some “feature phones” without touchscreen!!! YouTube app works and playback is in 720p / 1080p
OBS was victim to this a while back. it was almost indistinguishable from the real sites so pretty dangerous
Mostly a windows issue there though, Linux and OSX have app stores to install that. Revanced is able to, and just doesn't for some reason. It's a massive security issue for many reasons, and this is a prime example of it. Especially given the app needs a ton of access on your device to operate. It's mind-blowing to me that people recommend this at all, and why there's no repo for it.
Revanced can't exist as a standalone app to be installed like from a store. Google would nuke it. It has to be a patcher. Original Vanced was a standalone app and that is what allowed Google to nuke it from orbit. It's arguable that Google ignored Vanced until the developers got money grubby and tried making NFTs, but the method they used for takedown was DMCA since it was their app just modified.
This is the same thing as ROM hacks, randomizers, etc and why they include a place to upload your own copy of the ROM rather than providing their own. Reverse engineering and modifying are legal, distributing copyright source, binaries, or blobs without the rightsholder permissions is not.
They also do have a repo for it, as well as the offshoot apps like Revanced manager, other app patches, etc. The fact it's not at the top of Google results is a Google-and-SEO problem, not a Revanced problem.
If you want a one and done app install then something like Newpipe is what you want, which is built completely on its own. Revanced is explicitly not that, it's the stock app hacked up. IMHO, Revanced is a nicer experience, but they are two very different experiences and approaches.