I only use G28 for all printers having autolevel. G32 S2/G33 store everything in eeprom so these data stays active and unless I do some action which might change bed level I see no reason to repeat this procedure.
Yes trust it! G32 S2 stores all adjustments needed so G28 has them on next homing as well. Most important thing here is that with z max homing you need
ENDSTOP_Z_BACK_ON_HOME 2
so endstops are not hit while moving xy at z max making position invalid.
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