Your message was cut-off a little bit. So, did you say I have to get Support to delete a post? So, if I write something, and change my mind, or decide that the post was crummy, I am stuck with it unless I go thru some rigamarole with Support?
Boy, so one must be careful here.
No, not quite. There is a short-term opportunity to edit your comments. Your options should be available via hover over the lower-right border of your comment's window.
It's intentionally short-term to limit its use/abuse by spammers.
As for 'crummy' when commenting anywhere online [Internet] it is always wise to:-
Think twice - comment once ....