I think it's appropriate to fear becoming attached to a stranger who needs you, generally speaking, mostly for the the bit of cash you supply (and maybe a little ego gratification). It's just not a good risk/benefit proposition in my opinion. And then there are all the problems with one-way openness and vulnerability that make it so sketchy.

I don't see how one can avoid becoming attached, as such things are usually involuntary, but I see no reason to pretend it's necessarily a good idea.

I did reveal my feelings of attachment/infatuation to one therapist, and it resulted in various humiliations and condescensions. Nothing was "worked through" and there was no point to any of it.