Is gear 5 Luffy JoyBoy

Currently arguing with someone on TikTok comment section and he’s mad cause I referred to hear 5 as joyboy which is utterly stupid to me because it clearly is. For one we don’t even know who joy boy truly was but we know he had the title joy boy cause when using gear 5 he would fight with a smile on his face joy boy now is a title that kaido said, another point of evidence is zunisha refers to him as joyboy when he’s in gear 5 to my understanding joyboy is a title given to whoever can liberate the world and be free unless I’m reading the obvious implications of such wrong but I’m sure we won’t know for sure because oda likes to jot specify a lot of things. Either way i think it’s totally fine to refer to gear 5 as joyboy since multiple others have.