Is this the typical reaction when a creationist asks for evidence and gets it?
It seems to be, yes. The general response is "ignore the content, attack the poster for presenting so much data". The method for engaging in the tactic varies from creationist to creationist, but the generic style is the same.
Yes it is. They realize they can't refute it, and that they don't have any counterevidence, so they just fire off some variation on "lies, all lies, this means nothing, you can't confuse me with facts" and then they declare victory. Others think that saying, "golly, you can cut-paste/use HTML" is a meaningful response.
This is the same "argument" they want to present in science classrooms. None of it resembles an actual curriculum.
Spamming a thread is no substitute for a coherent argument. It's the equivalent to yelling louder.