Well, that's the problem. Claiming that the car that isn't even in production yet has "underbraking" issue is misleading at best.
Regardless, I don't think that person was talking about the upcoming Roadster, because they added a link as a citation in "having their $200k super car be criminally underbraked. [2]", and [2] is a link to a video review of Model S Plaid by a big car youtube channel. I have no idea why they linked that specific video, because it was a glowing review of the car. The reviewers were giddy and threw tons of praise at it in pretty much every aspect.
You are right, Tesla makes good cars. The rub is pretty much about carelessness on part of Tesla in safety design.
I specifically linked the video because they are even handed in their reviews and not one of those who put down cars just because they don't like the CEO.
Mostly because the original reply seemed like it was just trying to insert a video that doesn't fit the criticism drawn in the comment, but is baiting for people who will just read the comment without watching the video. But I get the point you were trying to make now.
While I disagree, I cannot in good conscience not upvote a point made well.