Technically by twitch's rules, Josh's voice cannot be on ANYONE's stream at all. I would not be surprised if after this tier Method fires him for that alone. Sco can't afford to lose his/Method's twitch account.
As for raiding Mythic. Let's be real, FoH went 6/11 in the final tier of legion and realistically probably could've gone 9/11. Just facts based on what I saw. It's not rocket science to raid mythic and you don't need to do crazy prep unless you're going for world firsts. And let's be honest, no one here is doing that. Do you need to prep outside of raids? Of course, you need your ilvl up to par, you need your neck/wahtever levelled up, you need consumables (or farm them for the guild) - but none of this is some massive time sink anymore. The most important thing is you need to understand the fights in and out. For some people that's instant, for some guys it takes 50 pulls, for some guys it just never happens.
I enjoyed raiding Mythic because it provided a personal challenge, and someone once told me (not even making this up) that I couldn't lead a mythic guild. At the end of the day we went a lot further than people thought.
And let's be honest, two 0% wipes has to mean we were 7/11, right???