I don't see a single difficult example here. The answer is "NO." It's strange that you couldn't even find one.

I mean "Is including likes an algorithm?" You might as well ask if having a dog in the video is an algorithm. Any question about "likes" would be if you're manipulating the video selection based on likes, or is the user given a control to manipulate the video selection based on likes. If it's you it's an algorithm. If it's the user, it's a control. If you lie about the likes, then it's an algorithm. If you're transparent about the likes, then it is a control.

The other ones aren't even worth discussing. You might as well ask if having a blue logo is an algorithm, or if Comic Sans is an algorithm. "It's all so complicated!"

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edit: that being said, the EU does not care about this issue at all, and has had plenty of mandate and plenty of time to have done something about it if it did. They are also going to say "it's all so complicated." Because their problem is the unpopularity of center-left neolib governments that are just barely holding on with extreme minority support through bureaucratic means because they wrote the regulations. They want to keep what's came for British Labour during the recent council elections from coming for them.

So I guarantee that content will somehow become an "algorithm." The goal is to keep people who don't like them from speaking to each other.