Cloyce cards

So I've established that me Pops liked to play poker and that he held regular Saturday night games way back when. I asked him once whether he ever held a royal flush, the AKQJ10 all of the same suit. It's the highest poker hand possible. He held royal flushes twice. Yet he lost one time with one anyway.
The games were almost always at his house, and his house rule was that the dealer called the game they were to play while he dealt. Typically it was a standard round of poker and only varied by whether it was draw or stud (don't worry about what those are as it's not important to the story). But he had this one friend, I'll call him Cloyce just to give him a name, who liked to do things differently. Cloyce invariably introduced wild cards into the game.
He might call the well known deuces wild, where twos could be any card you needed them to be. Or it might be one-eyed jacks and suicide kings were wild. He would sometimes call baseball, where threes and nines were wilds. Dad hated such variations. But he felt that in fairness he had to allow them.
Once when Cloyce called for wild cards, me Pops ended up with a true royal flush: 10 through ace, all hearts. No wild cards. Yet he lost to someone holding five sevens: three actual sevens with two wild cards.
That grated him, and I understand why. I think you ought to play the cards true myself. But fair is fair, and at least it wasn't Cloyce who held the five of a kind.