I wonder if this points up a difference between PA and piano mechanisms, or a difference in the ergonomics of playing them, or just between how accordionists and pianists are taught. Pianists will tell you the black keys are easier to work with than the white, and some pianist-composers like Louis Moreau Gottschalk deliberately wrote most of their flashy showpieces in the five-black-keys keys.
I don't know. I'm going to theorize that outside the classical and art-jazz genres, or genres using equally complex arrangements for standards or film music, there's not a heckuva lot of use of the "black-key" key. Unless you're a pro transposing for a vocalist or something. But that's not normally at 130 on the metronome. But in Western traditional, folk, or pre-bebop jazz genres . . . Can't speak for the Egyptian baladi players or the Serbian/Bulgarian PA monsters--not sure what keys they favor.
Certainly Martha Argerich, Yuja Wang, the late Slava Richter, and countless other incredible pianists play "black-key" compositions of unreal complexity at frightening speeds on piano without a second thought. All I know is that in Irish and many Western folk/traditional/world traditions you don't really see reels afoot on PA at 130 on the metronome in keys like C#/Db. Even Eb. The French musette masters certainly played/play at lightning speed in lots of different keys. I do think a lot of old musette music was played in "white-key" keys--I believe "G/em" and "F/dbm" were big, though that wouldn't have been the case at all times. However, originally that was CBA.
There was recent discussion on another thread of PA player Karen Tweed's rendition of the usually quite fast musette waltz "Indifference" on a 34 or 37 key PA. On Google Images, sheet music for that waltz appears in a few different keys, including e minor, the key she's using. Musette PA player Dan Newton of Cafe Accordion Orchestra is doing it in the first link below, in d-minor on his 34 or 37-key. I see sheet music in C# minor, but don't see PA examples on YT in that key, though I didn't do a comprehensive survey, of course.
A quick perusal of a few impressive PA players doing this musette waltz rapidly hasn't yielded many in "black-key-heavy" keys, including people playing it with much more complexity, doing jazz improvisation and stuff, such as the gent in the second link below--another e minor rendition.
d minor:
e minor with jazz imrov: