改造違法化体制と改造忌避文化がデバッグ体制の貧弱さにつながっているとする言説

If this is a serious question, Japan is a country that disallows save editing and it's not like normal playtesting involves asking a bunch of hackers in other countries to try breaking it.

I'm sure they can test whatever they want on their own time, but they're likely testing intended gameplay and not thinking about how a malicious person might hack bad values to break it.

Their limited number of play testers who can only play for a limited time will never observe as many problems as the entire Pokémon community can. If they're not allowed to date skip, for example, they might only see one day's worth of outbreaks and think everything is fine.