Please don't ban me?
Oh god, you had a terrible experience from that "when to green" thread, didn't you? Bans are extremely rare here. I've only ever seen it happen in cases where someone either swore vociferously at others or tried to use the forum to plan definitely-illegal things. Getting annoyed when people derail the intended purpose of your thread is definitely not on the list.
On the subject of posting bad draws, I think you'll find that people here are unlikely to join in because most of us have realized that usually there's something you could have done better to avoid such a draw or mitigate bad luck that did occur. Not to say that there isn't luck in Dominion (because there certainly is), but as one forumite likes to say "You make your own shuffle luck." If I really can't figure out what went wrong and it looks to me like bad luck, then I'll sometimes post on the forum, but usually under the title of "What did I do wrong?" Very occasionally the top players who look at it will say that it really does look like I got unlucky (it happened once with a rebuild game), but usually they point out dozens of mistakes that I made that lead to my "bad luck."
On the topic of chapel. Just try trashing indiscriminately. Any of the first three shuffles where you draw chapel and any coppers or estates, trash them. It is almost always better to trash and skip your turn. Obviously, things are much more nuanced than this, but new players tend to undertrash rather than overtrash.