Earlier quoted context omitted.
The comment acknowledges this. As they say a move from Delaware to Texas signals something, it signals that the company goes not particularly care about shareholder protections or governance. It implies that the leadership of the company is more interested in not being constrained than in serving their shareholders.
Only if you assume that not being constrained is somehow a bad thing for shareholders, which apparently is a logical fallacy some believe true.
In the case of Tesla it was an explicit repudiation of those rules that caused the company to leave, so it’s reasonable to see it as a signal.