Holy reading comprehension Batman. It was pretty obvious that this was about stuff like surprise mpreg, xeno, tentacles, a/b/o, scat etc. - so things that are definitely a huge matter of taste and preference and just throwing them in there without checking with the prompter just sucks. If you want to write some cutesy buttbabies so badly even though it's not asked for in the prompt, do your own prompt and self-fill and don't derail a perfectly good prompt. (This is an example, obviously.)

It's very obviously not about vanilla sex acts.
And no, just throwing in weird kinks that are not specified in the prompt, THAT is bad ettiquette.