I typically assume it's a non-native speaker with things like this, but I'm not sure in this case.

I'd read this with commas around 'like', rather than with a period after it: "... how birds look, like, I'm afraid" works as a sentence while "... how birds look like. I'm afraid" is both wrong, like you point out, but also sounds much more serious than the jokey tone I'd expect from a message without punctuation and capitalization

Did you understand what was being communicated? Yes? Congratulations!

Because, really, that's generally all that's necessary.

No they're asking how do birds look like the way they do. In which case the answer is that a bird's body evolved to be streamlined and lightweight in order to fly more efficiently. /s

Multi-track drifting

No one cares mate.

It's fine to correct the grammar of children in your care, but not really in other circumstances.