I don't think Hunter trained MC yet, except indirectly by showing by accident what he is doing, but it didn't stick. he might have wanted to do it after he finished the conquest of the house. and to prepare for that, he used the growth hormone early for an immediate effect, which completely backfired as it made MC more attractive for the drugged up girls while Hunter barely made any progress as MC is a natural with the loving and caring aspect of his legacy. The use of heavier drugs might have marked a complete shift where Hunter decided MC is a threat. Drew had a hard time believing Hunter had to come to that level to overcome MC.
Now that Hunter is gone, it could be interesting if Drew teaches MC actual sex skills. right now, MC has zero skill except just thrusting like a maniac. he is still at a risk that any more experienced lover, Drew for instance, can come and take over by skill and technique alone, just as we can see in all of the bad endings. For example, among all the users of the dark web streaming, at least one or two could piece together who the characters are and where to find them, and come to take everything for themselves.
MC and Drew could share the house and visiting girls, with some exclusive to each, but that would make for some unavoidable NTR and most players wouldn't like it. Honestly, right now, MC alone is not enough to protect the house. He needs Drew at least.
which is quite impressive knowing how bad and unintuitive Daz is