Did I just read that creating another account when one is banned is against the rule too? When I joined Bitcointalk newly through an airdrop program that required us to post in the official ANN of the project, my account got banned after few weeks of engaging in such activities, probably because I had nothing substantial to say than just to praise the coin/token or the developers. I was just a newbie that had no knowledge on how blockchain technology works so the comments I made was related to the comments I saw in the threads. Generic comments like "great project", " nice project", "to the moon" etc. I placed an appeal for repeal of the ban and up to today, not even an acknowledgement did I receive let alone honouring nor turning down the appeal. In that case, I should have just left Bitcointalk community forum then?
That is correct, if the ban was not just temporary you should have left the forum.
25. Ban evasion (using or creating accounts while one of your accounts is banned) is not allowed.
The ban applies to you as a person, not just the account. In reality that is pretty difficult to enforce so many banned people do come back.