It's an ok feel good statement, but really that means nothing. Saying "We won't enforce these laws" doesn't stop the DA's from charging you, and sure as hell won't stop the deputies from noting in their reports every time they see one of those "Illegal" weapons (Have to cover their own asses). So just like anything else the guns still won't be for sale because the state says they can't be sold, and if you take them out and get reported, or you have a medical emergency and it's sitting on the table, or you are speeding on the way to the range and they see it, etc. it will be noted. Even if the sheriff doesn't come kick your door, it will be in a file and you will find yourself with a warrant for your arrest screwing your life up.
In the end you will have an easier time not complying with the law, as long as that gun sits in your basement and never sees the light of day. But that does nothing for those who don't already own one, or who want new parts or to have them repaired. What gunsmith is going to work on your illegal rifle? How many manufacturers are going to send you any parts for them after this passes (Look at the hassle to get parts in MA from many places and our law is less restrictive than this monstrosity).
And last but not least, these laws will be enforced with gusto by those same sheriffs against people they don't like. Political opponents, people who talk back, those who don't get down and lick boot fast enough when encountering him, and so on. Those people will find themselves with all the enforcement they can handle.