The problem is that their point is nonsense.
This isn't a long-standing problem being persistently ignored, this is a test flight designed specifically to discover such problems. They were so keen to test how the system handled problems like this that they deliberately damaged the heat shield before the flight (somewhere other than where this particular problem occurred).
The implication that this partial failure of the heat shield is damning evidence of negligence is either ignorant or deliberately deceptive
I don't think loss of tiles was the problem, actually. There were vapor trails in various places which I thought at the time were something venting, but Scott Manley pointed out that they actually look like hot air seeping through the gaps in the hinges. That would have exposed unshielded metal to hot gas, bypassing the heat shield entirely