Just my opinion although gleaned from reading various sources including the Mastercraft letter. This initiative is driven by the wake surf industry, which Mastercraft is a significant supplier and arguably it's most profitable segment. There has been a rather significant pushback on inland surfing with numerous municipalities initiating legislation / ordinances to curtail the sport due to damage / annoyance caused by the participants. I suggest you peruse the boat forums to get a read on it, as the participant feedback is enlightening on how they perceive issues relative to their sport.
As for the verbiage presented by Mastercraft, that alone will significantly affect the ability to engage in what this forum enjoys, slalom skiing in states like Michigan, Minnesota and Wisconsin. These states are peppered with small 100 - 200 acre lakes with shorelines that would simply eliminate the ability to ski, I live on one and have ski friends on several others. Within a ten minute drive from my house I can count 20 ski boats on lakes that would be non skiable with a 200' rule. Sure I can then go to the private ski lake I have access to, but if I truly want to see waterskiing flourish this is not a regulation that benefits the ski community.
To add to this, there was legislation proposed by a northern Michigan representative (a skier who wanted to ensure he still had the opportunity to ski) that would have limited the ability to ski. He withdrew the legislation once it was pointed the bill was opposite of the desired effect. Lesson - pay attention to what your representative is writing, he/she may not even know what is in the bill.
I hope the ski community stands up for itself, not just the private lake aspect but those on either a private or public waterway, and let's the surf industry fight their own battle. Small wake ski boats are not part of the problem and they should not be restricted due to someone else's.