I may be blunt with answers sometimes but I've been making webcomics for far too long to still get REALLY angry about comments about updates, or questions with an obvious answer in the comic itself, or people seeing things in your comic in a different way than you see it.
It's exhausting and pointless to try and steer people away from making such comments, because even if you get a few people off of that habit, new ones will show up and say much the same thing. Instead I choose to really take in the commentary that makes me more giddy, and go in with the mindset that even the people who complain about my update rate are at least getting into the comic. XP Half of the time they don't mean to be rude, anyway.
Outright mean or trollish comments I just delete 'cause hell no I'm too old for that shit.
Shipping I actually really don't care about. They could ship my character with a minor character that only appeared for half a second or ship two enemies who would absolutely never get together for all I care. They can even hate a canon ship! This is just called having fun with a fictional tale, why let it bother me? XD ...as long as they don't leave revolting, tasteless commentary or be ridiculously pushy with me about said couple idea, of course. Ship whoever you want but don't expect me to make it legit.
...and obviously things like this would make shipping a LOT harder to deal with, so I definitely get that person's frustration. ^^;