It's probably less about location (there are plenty of trackers from the states and as far as I know Trap is also a thing over here in Europe) but probably more about age (many of us are probably more interested in recreating the genres and styles they grew up with, e.g. 80s/90s pop/techno/house/etc.) and also technicalities (many modern electronic genres "require" a certain amount of production value which is hard to achieve with pure samples - not impossible to do in a tracker but certainly very hard to achieve without any plugins *, so it's somewhat incompatible with the file types we allow at ModArchive).
* or long pre-baked sequences / building bricks à la Magix Music Maker, which is boring and limited.