Loki fucks up the power dynamics of the crew far more than Jinbei ever could lol.
And with Jinbei, his actual joining of the crew was delayed until way later when Zoro and Sanji would definably would be stronger than him.
With Loki you're basically saying Zoro and Sanji will be tittering yonko level by the end of Elbaf, which is absurb lmao.
Let's also just forget Loki's bounty is above the wings
combined btw