Starlink will has promised better latency, bandwidth and prices compared to existing satellite internet. Perhaps that's where the confusion on the first point came from.
It's really baffling how someone motivated and talented enough to make such a tracking site would have such an odd opinion section.
Obviously, Starlink is not the best choice in all situations, but it is so compelling on some dimensions that such a flatly negative opinion is bizarre for anyone with even a cursory understanding of what's going on.
For existing GEO satellites, the equivalent measurement is 600ms. That's the relevant comparison. With just 20ms added on top of regular internet latency it would still be usable for competitive gaming at all but the highest levels, as the tweet says.
Those are very easy numbers to beat. Yes it might not beat prices and latencies for a super competitive city with true competition, but those are honestly rare and few between. The majority of north american cities have shitty internet at high prices and high latency.
Also, slap this router on a Tesla car, allowing it to have connection anywhere it drives, and you're golden.