I have seen their comments across this site for a very long time. Unfortunately I do not respect or put any stock in what they say, because of how unbelievably rude and dogmatic they are, and always have been.

"As a rule, strong feelings about issues do not emerge from deep understanding."

Fortunately, you can investigate this stuff for yourself and develop your own opinion. IMHO, DNSSEC doesn't actually "secure" much of anything. It can be disabled trivially by anyone operating a resolver. As I mentioned elsewhere, none of the major sites (FAANG) use it. What does that tell you?