Poorly researched from Aaron, but not really surprising as it's published in shitcoin magazine which is funded by shitcoiners who make money by spamming the bitcoin blockchain and who pay Aarons salary.

For starters, knots vs core is not about op_return, lol, and by framing it like that he ignores like 95% of the reasons why people run knots. Knots was started more than a decade ago and has position itself against spam for many years, op_return is just the latest reason to question core dev behavior and to learn about knots.