To be fair to Abdin: His game
was already called "Tardigrade" - including a small little blue Tardigrade logo - way before that. And the visual of his giant-sized, blue sparkling Tardigrade going FTL
was publicly presented
before DIS premiered. That's a pretty convincing case, and the reason why it's really only this DIS-fan-subforum on a Trek-fan-forum that extensively defends CBS. Outside, in the real world, people have most likely either A) Never heard of that case, or B) Believe Abdin, because, well, he was first. And usually, if it comes to creative similar materials, first dips count.
But! As such, CBS actually has a damn good case: As per
@Campe98's timeline, CBS already had finished filming their Tardigrade episode
before the day Abdin's Tardigrade teaser debuted.
That's the main convincing argument. Because without the Tardigrade, it's just people in blue jumpsuits in grey corridors. But if you wouldn't know this little tidbit - again, which was burried deep within
even here - just on a surface look, Abdin's claim doesn't look that far fetched.