> He actually tries to justify (or deflect) stealing the Let's Encrypt trademark by claiming LE stole the concept of a 90-day cycle. Ridiculous.

You can patent business methods, but saying a 90-day cycle is an "inventive concept" would likely cause a competent attorney to take you to one side and quietly convince you to not point that fifty-caliber BMG at your leg.

https://en.wikipedia.org/wiki/Business_method_patent

That's not really the heart of the issue. He seems to be taking it as a point of honor, as if someone is stealing his business model ... but LE isn't a business.

Comodo might or might have innovated a 90-day free trial. But let's say for a moment that Comodo did invent the 90-day free SSL trial. The intent is for the promotional purpose of purchasing paid products. LE has no paid tiers, and the primary motivation is to help the internet get encrypted, not to sell certificates. What's ridiculous isn't the idea that a 90-day cycle got "stolen", but that the Comodo CEO persistently thought of ISRG as a business competitor when they are not even in business. (No one is fighting you, dude).

What I don't get is why so many people kept playing into that erroneous assumption of his instead of calling him on it.