You're missing the point. No one really cares who you block. The issue taken is two-fold, though, and deals with the implementation of blocks: 1) it breaks linking, badly so on longer threads; 2) if it's the OP, the they are, in effect, choosing to block everyone for you in that thread.
I find blocking vice ignore a bit special. If someone not breaking the rules is so bad you can't even here, at the nicest pretend-elf discussion board on the web well, says more about you than they. Have fun. But, the implementation is super-bad because it breaks basic functionality. I'm not upset about the block function, I'm occasionally annoyed at how utterly craptastical it is.
But, it's a free board for me, and this is pretty darned far down morrus' priority list, well after keeping the lights on and eating. So, I'm not anticipating a fix until the software actually adopts and implements a block feature natively, rather than the bolt-on demi-hack the tool is now. In the meantime, I'll probably keep failing to not challenge poor argumentation and keep getting blocked by people that dislike being challenged. When I do notice who's blocking me, I'm more often than not unsurprised.