Six meter WSPR: Has sporadic E only been in Europe last week or does the rest of the world not do 6m WSPR?

I'm getting back into WSPR after an unplanned hiatus. I seem to remember that WSPR was just more popular in Europe across all bands...is that right? And that's what explains this spot map, not isolated propogation phenomena over Western Europe?

This map shows 1 week of six meter data (1484 spots) from wspr.rocks.