Most specifically, would I be ok to ask a specific question about how others would handle a specific situation where a client wants me to implement something I think is an awful idea. My question isn't an ambiguous "What do you do when a customer asks you to do something you don't like?" Rather it's a specific question about a specific case.
That sounds like it would almost certainly be off-topic on Stack Overflow, but you might try it out on Programmers. Be prepared, because it may be closed there as well, or you might just get "that's between you and your client" answers. As always, please read the FAQ and search before posting.