Also already addressed: "Simply wrong - testing by SOME businesses renders pot users LESS employable which is NOT UNemployable." Not to mention that legalization is independent of whether an employer tests. So no support there for the idea that legalization will swell the welfare rolls.
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.