It certainly is relevant, no matter what you say, because -- if someone says it doesn't matter, it doesn't matter what they say. Really. Unless of course one wants to insist it doesn't matter and they really believe that. Then that's their belief. It is absolutely essential to know what happened after procaryotes "came about." Of course no one knows how they came about, or where they came from, but apparently some people claim that from a procaryote came more? Reading this,
From prokaryotes to eukaryotes - Understanding Evolution (berkeley.edu)-- I am thinking the whole thing is beyond understanding. Period. One may conjecture, but it doesn't make it true. In fact, as I read it, it's not even logical. But that's how I see it, not as you evidently see it. And here again is where I sign off for a while.