>>44604569Early Dragon Quest games were largely nonlinear and did not suffer for it in terms of difficulty.
Having literally everything scale to your level will ruin any sense of progression whatsoever, making every area feel the same. There'd be little sense of you getting stronger outside of the levels of both your and enemy Pokemon being higher. This is a problem with hacks like Crystal Clear where they do exactly that.
It'd make sense of Gym Leaders and rivals to scale since they're supposed to be occasional challenges in the game. If you're worried about one-shotting everything then repels and avoiding any trainers you can are always options. If you go the harder way and stick with it instead of exploring other paths more fitting for your level, then that is a choice that is entirely on you and being too strong for earlier areas is a consequence of that, it's part of being a JRPG.