I understand the frustration. However, don't read more into something that isn't there. You asked, several answered. One continued to push it is ok just rehome it which others advised against. You mentioned your experience but new account which I didn't check nor care if I am being honest.
Yes, I was blunt and will apologize if you took it as being chastised. We don't need that and life is too short. Having said that my reply is because we see these types of posts daily. Often times with the fish being purchased anyway. In fact there is one trending yesterday to this very fact.
Not to get biblical here but the road to hell is paved with good intentions. We are all guilty if we are being honest of buying something with intent to upgrade, rehome, or what have you. That includes me. Do not take a reply with bad bedside manors personal. We either have read too many or experienced it ourselves by adding something that caused trouble later when removing. Ultimately we are trying to prevent you from making the same mistake.
Hope your day is well.