I agree with you. This guy posts each week a FAQ on alt.lucid.dreams which is absolutely not related with the forum content. And when people try to contact him about what he wrotte, he never replies. 
About extended time dreams, I think it’s possible. Have a look on CarbonCopy’s strange ND. It’s told there :
[url]The most intense and insane dream I've ever had (non-lucid)]
This dream looked like it lasted 2 weeks. But has pav says, it’s like in a movie : you can have flashbacks, jump cuts, but with false memories, so it seems to be real.
Anyway the question is : it’s possible in a ND, but what about in LD ? I know it’s possible in LD to stop time, or time travel or make a loop in dream time, etc. But I never had such an “extended time experience” in LD. 