no, just where they had the convention
actually ,when i was falling into this 'rabbit hole' a year or so ago on YT, I found out that many of these believers are European.
I would comment on the videos and their (the euro's) 'experiments' shown, to say just how juvenile and dumb those experiments were--like their distance measuring with laser designators of surveying accuracy. they didn't even accept that a laser measurement is a 'slope distance' and not a horizontal one. In survey, when using lasers you MUST do a conversion to get the slope distance to a horizontal one (which allows for and corrects for the earth's curvature)
their responses told me they had no idea want that was. and ones that did, would simply say stuff like "well, a conversion would only be necessary if you have BOUGHT INTO the round earth conspiracy"
It seems as if, many american/canadian believers have a religious aspect to their belief and the euro's are just crazy
a tangent of this belief is that places like devils tower and any and every other flat top 'table mesa' type hill are really old petrified ginormous tree stumps
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https://www.gq.com/story/behind-the-curve-flat-earth-director-interview