I saw the whole thing.
During Ozzy's set I remarked to my wife, "Y'know, it's so extremely like Ozzy for him to basically host his own funeral"
Overall that was the vibe. It was an OK festival show with a lot of huge acts sounding like themselves and a few sounding old and washed up (GnR), but Ozzy and Sabbath both sounded like they were supposed to and that's the important part, because from now on we'll only ever get cover versions of those songs.
I'm glad they got Bill Ward. The very last Sabbath show should have the full OG lineup. They've earned their rest.
The issue with the line of thinking you're espousing is that without evidence, you're suggesting a more complicated cause than simple chance.
Like yes, it is possible that somebody or some group lined all of these things up in advance, but it's also entirely possible that there's a ton of noise out there on the internet and that those with nefarious interests just signal boost the noise that benefits them.
Think of all the millions of random schizo-posters out there. You just pick whichever makes the right sounds and boost them. No need to invent the crazy when there's crazy on tap.