I sympathize, especially if the mod was brusque, but in this case I agree with the mod. That rule is helpful to keep information pure and readable. HN has simil

I sympathize, especially if the mod was brusque, but in this case I agree with the mod. That rule is helpful to keep information pure and readable. HN has similar rules - thanking somebody is fine, since this is discourse, not Q&A, but e.g. posts like "lol" and "I agree" are discouraged.