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>90% of the shiny mons in gen 9 look nearly identical to their normal form
Ignoring the disingenuous percentage, all of the cases of "samey" shinies are blatantly intentional to be unique. Ceruledge has only its eyes different because that's fucking cool. Gholdengos changes are minor because the Pokemons entire gimmick is being golden and shiny and rare.
Whether you think those are valid reasons is up to you, though.
>no shiny effect or sound in the overworld anymore
This is actively a good thing. Shinies were too easy to find in Legends Arceus, because you would just fly over everything until you heard a jingle. No sound means you actually have to LOOK at the Pokemon.
>no shiny effects or sound in raids anymore
This is dumb, yeah.
>still no shiny icons
Icons? Like in the Pokemons profile? Yes there are.
>actively portray being a shinyfags as a negative thing in the ashnime
Who gives a fuck