This is necessary to ensure that all printers use a valid prime tower position, now that the position computation rule has changed and includes the base/brim.
CURA-10783
A lot was changed in support. The short of it is that we now think towers should be on by default, but aren't _completely_ certain about it. It makes more sense to do make this change before the beta rather than just before stable, so we have a chance to revert should it prove disastrous.
This was found to be better in https://github.com/Ultimaker/Cura/issues/8321 due to changes to the simplification function.
Other printers are assumed to have a similar effect, or have their original value copied from Creality printers.