Alas, it happens too frequently for us to worry much about it. Life must go on and all that. Of your list, Jgln, Tepfenhart and Schleisinger have all blocked me - either for daring to question their work or pulling it apart in a separate story. I find the whole thing a little problematic, because if you cannot put even a centre ground rebuttal into the mix without fear of being booted out of the conversation, then what chance is there of meaningful discussion at all?
And yes the block before rebuttal technique is often deployed, it is one of my least favourite things people do on the platform and it should be banned indefinitely. I'll put in a good word for you with Wildfire if you do the same with Jgln. :o)