1. Streisand effect does not really apply here when it has to be just one dude leaking it. f95zone will leak it anyway.
It absolutely 100% does apply here. He is punishing his top tier supporters because some random dude leaked. That builds negative reputation.
By talking about it, and taking action about it he is fucking himself.
Further 6 hour delay is not a major punishment either. It's a slap on the wrist.
You should NEVER mention anything to do with f95zone or other pirate sites while on Patreon, or Subscribe Star or other payment processors.
Because, believe it or not there are a lot of Patreon supporters that do not know of f95zone.
I guarantee you he has more than 1 supporter in his patreon right now that is like, "Hmmm, I wonder where that dude is leaking it to. I'm gonna search for it."
You NEVER no matter what ever under any circumstances mention pirates or leaks on a site like Patreon, or SubscribeStar or on your game discord.