So the OP described an experience of black history erasure. You chimed in with a hypothetical movie that you wouldn’t be offended by but wouldn’t enjoy, but you used the term “offended” just so you could participate and make the experience about you?
Why choose “offended” as the verb here? I’m not saying I’ve never seeing an offensive movie… But what you described is an annoyance at most.
It’s almost as if you are claiming offense to be contrarian.
I chose it because the op chose it. To avoid confusion.
So the OP described an experience of black history erasure. You chimed in with a hypothetical movie that you wouldn’t be offended by but wouldn’t enjoy, but you used the term “offended” just so you could participate and make the experience about you?
Confusion appears to be immensely attractive.
To answer your question, no it is not valid. The fact that you don’t actually stand by the word offended really answers yourself.