OP I 100% agree with you. The "make me feel like eleven" is literally the worst single line of lyrics in recent history. If they want to convey youth, should at least use 16 or 18, 11 is just way to young? doesn't feel right at all. If they mean "make me feel like 11/10", should have said "make me feel like a 11". Still bad, but at least no pedophile vibes.
Whoever green-lighted this line should be barred from writing lyrics ever again.