bad, very bad
There were a lot of those Raptor engines going off-line. Right off the bat 6 died (they said 5, but it was obvious to see it was 6) and more kept popping without any update to the count. Notice all that green mist? That's Copper used in the nozzles being burned through. Notice lots of bright bursts and flames shooting off to the side? More problems, not gimbaling for course correction.
The Raptor engines have been a big issue. People near the test site in McGregor have been posting videos of engine testing failures left, right and center. They don't have them sorted yet so this launch attempt was destined to fail. And, fail it did. One of the three main criteria on the test card was stage separation. They didn't get to that point and let the rocket continue for a long time after it was clearly in trouble before detonating the range safety explosives. I expect there will be words about that unless it needed to be left for the rocket to be well clear of anybody or any built thing below.
I've been playing with hobby rockets for decades and spent some years working at a rocket company developing reusable landers. I could tell from watching the plume that they had fatal issues beginning shortly after lift off. Perhaps even immediately after engine light, but I haven't see any good views of that. The company I was with always went to the test site with a belief that we'd get a good run. It didn't always happen, but we'd never go out expecting that there was a strong possibility of a catastrophic failure. Trying to analyze a bin full of bits is much harder than making sure the design was viable in the first place.