I'd say it's suspiciously-timed. My guess is Unity were tired of the shit PR, then tried to flip things around and use this to cast themselves as the victim. So I'm taking this one with about a planet's worth of salt.
Given current events, it seems very plausible to me they got at least one - but let’s not pretend it means the backlash is all wrong and we should start giving up all indie revenue to the great lord engine provider.