It’s just the wrong metaphor. It’s really “add to queue yes/no”. And on radio there there will always be songs you don’t know, it’s radio. You can tell it if you want to hear it anyway or not
If you wanted to hear it, you wouldn’t have skipped it. Yes, you can’t tell it explicitly that you liked it, but you can tell it that you didn’t skip it because you DIDN’T like it.
Don’t overthink it, it’s a tiny, tiny input for the big cloud AI, a single choice like that does not make a difference