SmokeyDope

Money, duh. You build up a following, repost some obviously fake CGI crap, at the end of the video plug your donation links like subscribe bell, and they eat it up. Mentally unwell people have a tenuous grasp on reality and more often than not believe whatever they want. Tell them what they already want to hear and your pockets can be easily lined. Also see religious cults and Bigfooters.

For a real example take oldie but goodie secureteam10. The guys been reposting fake footage for a decade. They’ve been in multiple controversies and proven to have created fake evidence for some of their own videos.

Yet despite the channels history and sketchyness, they still get hundreds of thousands of views a week. Because the UFO truther types simply do not care about real authenticity they just want a confirmation bias circle jerk. Read the comments in some of secureteam10s videos and you’ll understand the exact lack of sanity or intelligence in these communities.

Good documentary on them:

https://m.youtube.com/watch?v=GRkwXphhv1E&pp=ygUSc2VjdXJldGVhbTEwIGRyYW1h

Yes theres absolutely tools to convert mc worlds to minetest/luanti worlds. using these tools probably requires some willingness to run terminal based shell commands though.

https://github.com/minetest-tools/mcimport

Have you been keeping tabs on the mineclone projects these past few years? Mineclonia and voxelibre are both excellent Foss alternatives. Most people would struggle to be able to identify MCLA with a MC texture pack as any different from real deal.