Why would you want to play Pathfinder if you didn't want crunch minutiae? In my mind that's what the PF brand is - it's the version of the game that is for players who like massive amounts of crunchy options in their games. The folks for whom 5e is too streamlined and doesn't provide enough options.
Streaming would be difficult with that kind of brand, I think. You'd need to find listeners who are interested as much in the crunchy rules tabletalk as the narrative. I don't know, but I suspect that's a much smaller audience than the audience for streaming overall. (Although I will admit that I always enjoyed the "leveling up" episodes of The Adventure Zone when they were in their 5th edition campaign and hearing them make choices and adjust their character sheets. I'm probably the weird one there tho.).
(I also think looking over the playtest document that they might be misunderstanding their audience a bit - the playtest rules are way too "cleanly" laid out and that, combined with the reliance on keywords and tags, makes the book look like the 4e Players Handbook in ways that I suspect irritate their core audience who are still with them even after 5e emerged. My scan through the system doesn't make me think it has much in common with 4e at all mechanics wise, but the layout and presentation of the rules kind of does. For a brand that developed a large audience based on being "not 4th edition" when it came out of the gate, that's a risky move).