There IS a tension here. Nobody can really fairly say "your fantasy must only run in certain directions." OTOH there are undeniably parallels between racist tropes and ACTUAL fantasy tropes. So, dark colored, barbaric, dumb, violent, evil orcs as a thing really IS problematic, as a generalized thing. Now, it may be that you are OK with that, which is your business (not saying you are or aren't, nothing personal intended). Its hard to really condemn people, up to a point. However, if you insist on running a campaign in which racist tropes are explicated, reified, indulged in as ends in themselves, and then enjoyed as such, I would personally call that campaign and group racist!
This is going to be a long and complicated journey that RPGs are going to have. It is barely started.