Nice photo matching work, OBM.
Those muppets, as you appropriately describe them, have indeed been silent about the shape of the shockwave. Instead, most of the conspiracism relating to the eruption has been claims that it's either a nuke or a meteorite. The idea that a volcano that's been erupting intermittently for a decade might erupt again apparently is crazy talk - they're convinced that the first H8 image of the eruption is instead showing something heading in for impact.
Yes, I've been slumming it on YT, trying to engage with flat earthers and the odd Apollo denier. There is some industrial-strength denialism and conspiracism at work there.
But the other thing I've noticed is the BS approach of the makers of the flat earth videos. As defined in an article from The Conversation (
https://theconversation.com/bullshit-is-everywhere-heres-how-to-deal-with-it-at-work-135661) these people aren't interested in facts, or even in lying, they just say whatever they can to maintain the controversy, keep people coming back to be conned and sucking in more marks. I find this particularly repellant.
Then there's the steady stream of comments (not all of them trolls, I'm sure) from people who've obviously been watching the videos and been convinced by them. The combination of naivete and arrogance is depressing, so I'm also motivated to do my little bit to plant seeds of doubt.
Perhaps the most amusing part of it is when other commenters confidently dismiss flat earthers as crazy left-wingers, only to be informed that all flat earthers who've express political opinions are actually Trump supporters...