His opinion isn't any better or worse than anybody else's. Just because he says something doesn't make it true, or false. It's just his opinion.
If you have a tech problem, the LTG from RGP is the same LTG on Pinside. I'm sure 90% of the people on RGP also read this site, and post on this site.
LTG, Cliffy, Clay, McCune, John Wart Jr, Chris Hibler, Chris Hutchins, Tony from GLModular, Rob Anthony, Vid1900, Bryan Kelly, etc..., and many, many more, all have posted on here, or are regulars that have gone out of their way to help people.
Even Neo posts here regularly- not so hard to go back and forth from site to site. (Yeah, I know RGP isn't a "site" but rather a "newsgroup", but 90% access it through RGParchives, or Google Groups so it might as well be.)
EDIT: Just read the above post by Robertmee- great minds must think alike