I'm really sorry to hear about your experience. It's only a game, but someone telling you that you're bad at something when you're really trying hard can cut deep. As someone already mentioned however, this is the nature of the internet. There are many sore losers out there who are quick to blame anyone, but themselves.

I will always blame myself for a wipe, every single time; because even if I didn't cause the wipe, perhaps there was something I could have done to prevent it or perhaps I didn't give good enough instructions? Whatever the reason for the wipe, I'll do my best to correct it.