Negative BPM and negative stops are glitches. They weren't technically supposed to exist, but someone found them and took advantage of them. You can't use them in SSC because the writers completely redid the code and got rid of as many glitches as they could... and those tricks were a couple of them.
How is it laughable? People have brought the game into a different place than it was a few years ago, and they love it.
Like I said, the whole "theories" thing doesn't really exist anymore unless they are trying to BE THE BEST. You might see a theory or two in a file but thats just because thats how they wanted to step in in the first place. Not hard, like you said.
Also, no one likes doubles unless you are playing pad files.
But they 7k is the total "wave of the future" currently though right? So no one likes to play 8k but 7k is the "future?" That is also laughable.
The game isn't in a different place now. Chart writers are trying to do too much with their shitty placement of arrows and so now they think they need more space and that's it making the game better. It never needed expansion, they needed to be better chart writers.
Nope, the entire current Stepmania community is still a big wad of pretentious twats just like it always was.