why are posts removed ?

I was editing my reply post to you when your posting got removed.

You post was of a complaining/ranting nature which was, eventually, deemed inappropriate and in violation of the Terms of use of these Apple product technical supoort communities by the Apple support community content moderators and as a result your post and all of its replies were removed.

These user to user Apple product technical support communities are for problem-solving/troubleshooting of Apple users products, software and services.

NOT for posting complaints about Apple or its products or for ranting about Apple products and/or how Apple conducts its own business practices or for posting suggestions to Apple or for general social media-like conversations concerning Apple or its products or future products.

So, your post was summarily removed due to one or more Apple Support Community violations.

Tap and read the ASC Terms of Use here.

Apple Support Communities Use Agreement - Apple Community

If your post was removed, it's because you posted something in violation of the Terms of Use you agreed to when you joined the forum. Reasons could be you ranted (not permitted), you used inappropriate language (not allowed), you were rude or defamatory towards another user (not allowed) or you could have asked about the beta software (also not allowed).

I‘m not a 100% sure so i could be mistaken because i see a lot a posts on a daily basis but i think it was because you complained about the fact that very old iPads (1st gen) won’t get the latest iOS version. This is a forum if you have a technical-related problem.