Smoker had the advantage preskip due to the fact he had a logia, with Luffy not knowing haki at the time. Ever since the timeskip however, tables turned, not to mention the gap which grew further and further due to Luffy's timeskip training
Last time we saw Smoker was during the events of dressrosa and he was still injured, heading for Vegapunk
His only chance to still be relevant is if he somehow gets upgraded by whatever new invention Vegapunk could be creating
Luffy totally outclasses him though. He was already a level(or two) above in Punk Hazard. Then he gained future sight, leveling himself further, and now level 2+3 hardening during Udon's training, leveling him up even more
At best i could see Oda do some gag moments next time they meet due to his jitte countering devil fruit users(and eventhen, in Udon, Luffy was affected less, although the seastone cuffs were weaker against df users than ordinary seastone cuffs), but in terms of overall level, he left Smoker in the dust since PH, with the gap growing bigger and bigger, with unfortunately Smoker turning into irrelevancy power-wise