Should you've stopped at "everyone can be racist", the comment would've been an excellent, if oversimplified, synthesis of the issue.
E:
> No one wants to debate pedantic redefined terms
Some do, and we can give them the space to do that without implying that the effort is automatically deserving of consideration.
> pedantic redefined terms that liberal arts professors came up with so they could sell books
That's a somewhat silly thing to argue. That's not how it really works, and it's not a "liberal" thing, whatever that may mean. (I assume it's an American term meant to designate something that's not conservative.)
E:
> No one wants to debate pedantic redefined terms
Some do, and we can give them the space to do that without implying that the effort is automatically deserving of consideration.
> pedantic redefined terms that liberal arts professors came up with so they could sell books
That's a somewhat silly thing to argue. That's not how it really works, and it's not a "liberal" thing, whatever that may mean. (I assume it's an American term meant to designate something that's not conservative.)
Otherwise, what you say is correct.