I know people don't like them, but I've never understood why.

It's because they're whiners & if you're not doing something they approve of it makes you a terrible person. Ignore them.

I was never gonna stop using them in the first place, lol. I just wanted to know. :3

It makes it easier to grab. If you were to contract your pecs and hands in an aikido match vs contracted pecs without contracted hands, you would grab them first.

Contracting wrists and pecs vs a just contracted pecs gives the inside grab and more control like Lazors said above. Alot of people complain about it just like "leg grabbing" gives control and people complain about it.

People do not like not having control.

contracted wrists allow for surprise ungrabs too

Wtf? Contracted wrist are not bad if you contract your wrist it allows you to force dq them easier.... Like what I said in the other thread whatever makes you win is bad or a "noob move". just ignore the person and next time you fight them shovel them the best you can.
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Oh you ninj'd me