[Wyers]

The a2 suited maybe, but I don't think it is at all a costly fold. Why would you raise in the cutoff with the k10? Obviously not for value, also not to isolate because most of the original callers are going to call your raise anyway. These posts are pretty much worthless without a description of the types of players at the table. Q10 is not a hand i like playing UTG under any conditions.

I found it difficult to read the remainder of your post after seeing that first line.

If you aren't going to play A2s after 4 limpers then yes it is a very costly mistake.

KTs in LP and QTs UTG are also hands that can be played in various manners from their respective positions. True, if you plan on limping in from UTG when QTs you better be sure that the table conditions are appropriate. But to say it is an "auto fold" is very wrong.