you don't contribute much to Saidit

Agreed, I am mostly a weekend user.

you get someone banned who does contribute many times more than you do

I didn't get anyone banned. The user in question was banned because she broke the rules, repeatedly.

Saidit is worse for it

I think I addressed this already. I hope to see her back after she gets some meds or much needed psychological help.

and it's low POD to harrass a user constantly for 2 days.

Yes, agreed. Thankfully saidit does a good job moderating.