I think you make a good point, but got flagged for snark. It's not a totally bad thing that people try to enforce politeness here.

I understand, I read my comment again a few hours later and it could be misinterpreted. Or maybe the parent edited the original message (can't remember)

I wanted to point the fact that the argument "exploiting people who are bad at math" is not a strong argument, given we are all exploited at some point because we aren't "math machine". Miscalculation can happen to anyone who is human.