Yeah I got contacted too. I've been talking to SidAlpha about this issue. He has this advice:
"In terms of the Trademark dispute, he would have a case with the other Dev because it DOES create market confusion. But in terms of your video(s) he has no legal right to strike your videos as even IF Fair Use wasn't a valid defense, it's not even his copyright. If he filed a DMCA of your video, it would absolutely be against the law and you would have a VERY easy time suing him.
You cannot claim copyright infringement of a thing that you do not own the Copyright for. Trademark disputes between developers should never be used as an excuse to flagrantly violate the law in order to punish Content Creators out of a desire to blind the public as to the other game's existence."
So it's illegal for a developer to file a DMCA takedown for a video of another developer's original game. No matter what the game's name is.
For full transparency, I have removed my video as I'd rather not get in a fight about it, but if the Dino Hazard dev doesn't rescind the Copyright strike I will pursue legal action.