For discussion, does the idea that this proposal breaks the restricted laws in some states have any positive merit?
If you mean that the proposed semi auto license would free one from the various state laws prohibiting such, Stokes kind of dances around the point, saying a bit of both.
he claims his idea would allow you to have items prohibited by certain states currently (Assault weapons and "oversize" magazine) and once you have his semi auto license, the states can't prosecute you for having them in their state.
BUT, he also says his license wouldn't interfere with state and local laws about carrying them, etc. (see "can I carry an AR in Times Square in his Q&A section).
He's touting the benefit of his license (freedom from spurious prosecution) yet at the same time downplaying the fact that still enforced local laws preventing you from carrying the weapon give no benefit to the "protected" out of state owner, being essentially the current status quo, plus the addition of the federal semi auto license and what ever its requirements wind up being.
it is the verbal matador's cape, concealing the sword (still) held behind it.