Just saying, but for a while now I haven't since Luffy use his gum-gum powers in action.
[Spoiler alert to those not caught up]
It's just been all haki. Especially since he got inprisoned in the Wano Kuni arc. And even though it's all haki, it's like he forgot how to use conquerer's haki.
Like when he was being held by those prisoners, bout' to get shot by the plauge, he could have EASILY got out using conquerer's haki, but he didn't. He needed help from the 9 samurai guys, like bruh.
And no, i'm not hating, im just saying they shouldn't have Luffy being cornered anymore by little shrimps like those prisoners.