Used Kendrick's Laser Collimator for an SCT?

Has anyone read Kendrick's comments re. the laser collimator as used for
an sct at the url below?

http://kendrick-ai.com/astro/misconceptions.html

I've read pros and cons in the past comparing the laser collimator vs. a
star test and still like the idea of a test I can use on cloudy days, or
just because it's "there"!