In your utopia all pot users are hard working taxpayers who won’t ever drain the welfare system while in reality many aren’t which is why leftists are pro-pot legalization and against drug testing those who receive welfare benefits.
I never said nor implied that, and it's not the question - the question is whether many MORE people will become welfare-draining users after legalization ... and the answer is that there's no reason to expect that and there is reason not to expect it.