Hell no. Using workers for non-html content is not "bending the rules". It's a normal and encouraged use case. And saying "I'm a heavy user, is that maybe part of it?" does not mean they did anything wrong.
I don't see any signs of bending rules.
And someone going "Is this too much load? Are they not being paid enough?" as desperate guesses after getting banned, does not mean they were actually doing anything borderline or that they "know it".