Well, to answer your question, I didn't. I honestly don't read many of your posts.
But, now that I've looked back through the exchange, what he asked you to "bring data" about was your rhetorical question about recalling Clinton, Bush or Obama doing something similar to Trump regarding federal employment. That wouldn't be a matter of opinion, it would be a matter of fact. You were making a factual assertion by posing a rhetorical question -- the assertion was that those previous presidents didn't do this, at least to this level.