No, not exactly. This was the case in MG2 but things have changed.
PCs follow the order of presets within the folder hierarchy. i.e. if you change your folder order, the PC allocations change too.
If you have no user presets yet, the factory patches are the first and only (by default) and will follow the folder hierarchy as you execute PC 000, 001, 002, 003, etc. But you may have created user presets also, so their PC allocations will be dependent on their position in the folder hierarchy.
For this reason I custom arrange my folder as follows, thus placing my user folder above the factory folder:
So this makes ~MIDI Guitar/[A] User/01 [A] HEX BASICS/01 MINI… respond to PC000 (if we’re thinking PC000-127) and the next preset will be PC001.
It’s a minor nuisance to set it all up, but once it’s done you have total control over your PC numbers. This applies to both macOS and Windows.