If you are talking about the contractual/legal issues between Randy and IB, I think you have that backwards.

All posts including OMNI counted the same when Randy was sole owner of FT (same as they do now on his new IBB).

He unilaterally decided they don't count (and never should have counted) after he had sold to IB.

We have to take him at his word for his reasoning, but the reality is that his 'post a random thought contests' did start in Community not long after that.

In any case, whatever the history or behind-the-scenes money drama (or not), what's clear is that today certain off-topic threads count, certain ones do not. It's inconsistent and illogical.