It’s a copy pasta, either reddit or 4chan

They are “buy once” in that their licenses include perpetual fallback. Whenever you stop paying, you retain your licenses perpetually

This is either a person who hasn’t followed ETH since 2016 or is intentionally spreading misinformation.

It HAS been rolled back once, when the blockchain was in its infancy. But to say that it is still “centrally controlled” suggests having no idea what has happened in the 9 years since.

Simp is also just short for “simpleton”