That entire post is that you should enable DNSSEC because it's "more secure", and there are no reasons not to.

"More secure" begs the question "against what?", which the blog post doesn't seem to want to go into. Maybe it's secure from hidden tigers.

My favourite DNSSEC "lolwut" is about how people argue that it's something "NIST recommends", whilst at the same time the most recent major DNSSEC outage was......... time.nist.gov! (https://ianix.com/pub/dnssec-outages.html)