I don’t think the 100k thing is a legal limit. More likely it’s the platform keeping their costs down by only doing KYC on people that have decent amounts of money to invest. Either that or there’s something I’m just not aware of here, which I guess is more likely.
The problem being that they’re also fully in favour of allowing businesses to do whatever the fuck they want. Even an ideologically “pure” libertarian would support your right to gay marriage while also supporting the right of your landlord to kick you out onto the street for being gay. They’ll support legalization of all drugs, but also support your workplace being allowed to fire you for posting about weed on your social media.
Paying lip service to socially progressive ideas is meaningless if you also want to institute a neofeudalist society where every freedom is only really afforded to the wealthy.