This isn't a "smaller server" thing. It's just a "people other than you" thing.
Just because you know a strat, you can't go into DF and expect anyone else to know it, or it's moniker.
DF takes people from all servers... not just yours and the smaller ones. That means it also takes in players from the other larger-servers. Which means you're highly-likely to get people from other larger-servers rather than people from smaller servers just 'cause that's where the most people are.
So, if you're going into DF and people aren't knowing what "sup method" is... your first question shouldn't be "what are the smaller servers doing?" It should be "what are the other servers doing? (and likely, the other larger ones).
But, if you really want to know what happens on smaller servers, I'm on Zalera. We used to be small, but now we're medium-ish or so.
Anyway, PF on smaller servers doesn't use "different methods for Garuda EX" or things like that... PF on smaller servers simply doesn't exist.
Well, it does, but it's used much less just because there are fewer people, which makes it tougher to fill and people tend to realize that it's easier to just use DF or their known FC/friends.
I personally don't check PF much on Zalera, but I do check it 6 or 7 times a week. I've never seen it have more than 7 or 8 parties at the same time, in total (last 6-8 months or so).
It generally averages about 1-to-3 different parties to choose from.
If your server really is small, you either use your known-FC and fill from DF, or you generally just use DF anyway because you know that PF is probably not going to fill up quickly.
But none of this has anything to do with knowing "sup method."
People will know sup method because they've either seen it before or they looked it up.
Looking up possible strats is completely independent of being on a large server or a small server... that just depends on the kind of person playing the game.
Seeing it before, however, is slightly dependent on being an "other server" than yours, since yours says it all over PF so it's a way people can see it.