Oda likes to retroactively make Luffy’s previous Gears useless trash after he gets a shiny new Gear.
G2/3 Luffy couldn’t even dent a single Cracker biscuit soldier for some reason, and a similar thing happened on Egghead with G4 Luffy vs Kizaru
This is only partially correct since Luffy used G2 and G3 A LOT against Kaido and it was successful.
Like he's clearly still comparable to emperor level fighters even without G4, yet he's not using this power against other enemies at all the moment G5 got introduced. To make things even worse, Bound Man was shown next to Hybrid Lucci, lol.
Furthermore, Luffy didn't even need to stay in his G5 transformation since Loki was the one defeating all the MMA monsters.
Seriously, this is so freaking stupid.