Yes, it does allow anyone to compete with me, regardless of training, experience, education or credentials. I've owned my landscape lighting company for 16 years, and the great majority of that time we have operated under a mandatory ES (Electrical Specialty) license. I spent a great deal of money and time to obtain that license, not to mention the continuing education courses and fees associated with maintaining my license. In fact, I attended Mike Holt's multi-day seminar which helped me prepare for the state test, and the course was a huge benefit.
To answer your questions: Yes, there are other states that require a license to install low voltage lighting. Just because it's low voltage, that does not mean there are no risks or danger associated with it. Improper installation and/or techniques can result in melted connections, wire overloads and fire. Contrary to popular belief, there are very significant risks associated with low voltage lighting. There are NEC codes and regulations that outline specific parameters within the trade, and it is my belief that any time the NEC has a governing control of a trade, the installer of such equipment should be licensed. Just as an example: Ohms law tells us that 120 watts of incandescent light will produce 1 amp draw at 120volts... Watts divided by volts = amps. The same wattage in low voltage lamps will produce 10 amps, or 10 times that of 120v lighting. 120w/12v=10 amps. The average handy man, irrigation contractor or lawn cutter is not going to usually have that kind of knowledge, therefore putting a homeowner at risk. Having a license elevates the trade, raises the standards and keeps us pros relevant. Professional landscape lighting is not about throwing lights in arbitrarily around someone's property. It is a skill and a talent that is learned over time with experience, effort and training. Allowing "just any ol' hack" to weasel his way into this industry is an insult and a detriment to many people, including lighting contractors, end consumers and those who support and assist in the betterment of the industry such as the owner of this forum, Mike Holt.