The team in charge of developing MigFlash, the MigSwitch team, has just announced through their
X.com profile that their workaround is indeed compatible with the Switch 2.
For this, it announces that "the compatibility of Mig Flash with Nintendo Switch 1 games on Nintendo Switch 2 is confirmed thanks to the console's backward compatibility."
Another important piece of information is that it announces that a new Mig Dumper (or a firmware update, this remains to be specified) is being developed, in order to potentially allow the saving of Switch 2 games.
Of course, until the console is officially in the hands of users and owners of MigFlash, it is difficult to say that everything will work in the same way, but it is clear that this information will probably accelerate sales, given the price of the Switch 2 games, in addition taking into account the particularity of the microSD Express.