Shinies found during normal gameplay, with no support from any mechanics increasing chance = cool, based.
Shinies found by mindlessly rerolling the encounter, with all the mechanics increasing chances = shit, cringe, waste of fucking time.
There's nothing special in shiny Pokemon found by shiny hunting. Ultmately sooner or later you're bound to find that shiny Pokemon of specie you hunt so by sitting there and rerolling the encounter you are bound to find one. It's not rare, special, different - everybody can do this, shiny Pokmon are common and are no different from standard colors.