It's starting to feel like that tbh. Even WB was turning enemies into crew members or affiliate captains. I think the problem here is we are seeing Shanks going up Against rookies with Wills of steel. Rookies who won't ever deviate from their set goal. So the possible cause of action really is to annihilate them. He is standing on Business. And mind you he doesn't go hunting for these kids, they are coming to him themselves.
This is the true test that separates Luffy (and Roger to an extent) from all the rest.
Luffy turned hostile or indifferent supernovas Kidd, Law, Zoro, Killer, Bonney, Capone, Drake in to temporary or permanent allies.
Luffy turned hostile or indifferent shichibukai Mihawk, Crocodile, Hancock, Jinbei, Buggy, Kuma in to temporary or permanent allies.
Luffy turned hostile or indifferent yonko Buggy, Whitebeard in to temporary or permanent alkors (+ Shanks but that is different).
Luffy will conquer even the yonko at some point, he doesnt have to rule them only make them his allies when needed. Time will tell if BM or Kaido come back as allies. Perhaps partnering up with Shanks or even Blackbeard.
Roger in his time made allies of fellow supernova Rayleigh and Oden as well as yonko Whitebeard and Hero Garp (Luffy has Coby). Even Shiki fought for him. Shanks has yet to show us that he can do the same apart from Mihawk (his WB). He did try with Marco (Oden equivalent) but failed.