I think it’s quite possible that Reddit poster does have some inside info, but is covering his tracks to pretend he doesn’t at this point. Belichick might have been outing leakers, or the guy realized he was giving away too much and didn’t want the attention.
Could also definitely be full of shit and have made a lucky guess yesterday.
PFT was a complete joke today. You had Florio pimping the guy and his big story and another writer saying nobody should take the guy seriously. They got clicks, though, I guess.