[Do the people in your mining group know that you were involved in this withholding attack?
This kind of statement is typically pejorative - and its not been just you.
Who knows for sure if this was an attack (as in the sense of it being willful)?
Block withholding due to a bug in mining code that has now been fixed is one thing, an intentional block withholding attack is another.
Brucexie does not appear to deny the former - the extant narrative/claims suggests that there was a cgminer bug in their kit which got fixed - the time line on this is still a little unclear and it would be helpful if this was clarified.
So far as I can tell there is no evidence (that any one has seen presented so far on this forum) to support that this was willful.
Surely one needs this evidence in order to assess it; otherwise one is guessing.
Not really. Whether it was intentional or not is irrelevant.
They didn't contribute to the pool, that is a fact.
Therefore, they should not benefit from the pool.