Man have been getting the bodybuilder/physique guy look for decades and 99.99% of them did it without attending a muscle camp. So, there is nothing mysterious about it. In that sense it is "easy." It is "hard" if you do not have the discipline to train, eat right, and supplement, but if you do not have those things no seminar/camp is going to give them to you... at any price.
But almost every single one of them has read a physique mag or visited a bodybuilding or fitness website. Every one of them would have taken the opportunity to train with a pro or ask them for training advice, if given the chance. And every single person who has worked out - specifically with the goal of adding significant strength and muscle size- has gone through periods of trial and error.
And, no, building a competitive level physique is not as "easy" as having discipline. There is a world of differfence between being fit and looking like a bodybuilder or a physique model.
I have never made an association of bikini competitors with lesbianism so I am not sure why you are grasping at that straw. As for the fundamental difference...
The "lifestyle" videos, the private posing sessions, I could go on and on... And now we have the proliferation of "muscle camps" aimed at whom exactly? I find it hard to believe that you are too clueless to connect these dots. 

It's not grasping at straws. You've made the link between male bodybuilding and homosexuality multiple times. You just posted this:
So the guys who sign up are a strange mix of Flex acolytes, fans, and worshipers who want to be in the same room with him to satisfy some weird longing. Maybe they will get some photos out of it and treasured memories..? Any way you look at it... it's weird.
You reposting that six year old quote from gordiano is irrelevant. There's no indication any of that goes on at these camps. Most fans of male bodybuilding are men and a majority of female fitness competitiors' fans are women because their physiques are inspirational and aspirational for their followers. Of course someone who would go to a Flex Lewis seminar would be a Flex Lewis fan. There's a lot of things about pro-bodybuilding that are weird and gay, but seminars don't fall into that category.