The only vehicles that I've had experience with the oil pan stripping out were ones which the oil pan had no crush washer or it had been used multiple times without replacement to there was no remaining "soft" washer to "crush". At the price of a crush washer I just don't understand the "reusing" of an engineered part which is intended to be replaced. If I apply the specified torque to a bolt with a crush washer a set number of times, without replacement, once that washer has "flattened" the torque needs to go somwhere, it will have to start applying stress to those threads. I've changed oil in Honda vehicles totaling well over 600,000 miles across multiple engine displacements not a stripped thread. But the two that I've helped other owners with 1 had no crush washer the other looked almost hammered flat, both required replacement oil drain bolts & retreading
I guess the fill ports of various could be skipped since there as long as it was in a location where fluid couldn't leak out or contaminates get in, IMHO, VTM-4 Drain & Fill, & Transfer Case drain & Fill are low enough that personally I'd replace them, YMMV
Obivously if your using a Mity Vac, or a Fujimoto Valve , the oil drain plug becomes irrelevant