Likes from logged in views do count, the like to view ratio is higher due to that.
A German YouTuber tested it with an unlisted video, I can’t find it as of now but I do find a lot of deleted videos in my liked ones…
Basic theory as of the time of the video is that they want to go against bot views. Short views did not decline, only long form video, and of those the people with mostly desktop views are hit the most.
Edit: found it!
No, something about your setup is messed up. Likely they can fingerprint and identity you.
If your IP address were shared by many users and you had a properly configured browser to defeat fingerprinting, then they torture you with captchas to force you to login, so they can profit off of you