We all make mistakes from time to time, jump in with a reply and then wish we hadn't said something. Being able to admit that has been done and make a public apology is always something that will win respect of others.
I've not seen any of the other posts that you refer to (or if I have they've had little impact on me!) and there is no reason for you to feel uneasy.
Providing you come into this forum with the right attitude (and not one that is to upset/annoy anyone else) then you are (in my view) entitled to your opinion as much as the next person.
Long may you continue to be kept up to speed!