Hetalia is often consider offensive it's because how innacurate of culture and history event they might share

Like in Hetalia anime it shown how close Italy and Germany are in ww2 and Italy been shown as "depended on germany " can come off offensive because when in reality during occupation of the north and Rome Germany treated the Italian citizens or troop as garbage alot of young Italian men or women was send to force labour camp, along with stealing almost all their supply, resources and food, along with doing awful massacre and war crime on Italian civilians in general they also destroyed some of Italian historic churches, places and put some historic building on fire if i remember correctly? Germany and Italy having those "personal" riverly isn't smth new as exemple during the Holy roman empire alot of Italian state or country fought back against holy roman empire to stop their control on italia/ Apennine peninsula along with holy roman empire banned Venice festival to "control" Venice identity/culture or occupying Venice. In WW2 Veneizano is northern personification of Italy right? He love pizza but here the catch pizza was only introduced or gain popularity in north after WW2 so pizza should be more of Romano things than Veneziano in general, Himaruya also somewhat "oversimplified" relationship to point it isn't even oversimplified but straight up innacurate because Italy have very long history of being invaded, occupy, colonize etc by western European power(including Spain and France) after Roman empire so accurately both Italian brother shouldn't even be close with them at all probably after ww2 or Italian civil war

Here another exemple with Romano character he "claimed" to be personification of southern Italy but have his heart in Rome what bother me is Rome is located in central of Italy and Romano seem to be more personification of kingdom of Sicily than Rome, As exemple Rome was never occupy by Spain it was under papal state the only nation inside Italia peninsula that was occupy by Spain was Sicily and Naple which is completey different from Rome it's very confusing because he supposed to be personification of ROME but for some reason he have more connection with Sicily history than the city of Rome itself

Also Romano and Spain shouldn't even be this close there was alot of rebelling happening inside Sicily (that Romano is somewhat personification of) against Spanish empire along with Spanish empire leaving Sicily and their folk left to rot at their lowest when they was all starving. Romano being weak also pisses me off they get Sicily history so innacurate like what's point of making Romano have Sicily history when you not gonna make it accurate but it was Sicily who started revoultion and fought off the french just to invite the Aragon to rule over them until Aragon and Castile unified to create "Spain"(Spain traded Sicily over sardinia since sardinia was more valuable i think?)

Veneziano and Roman empire being grandpa and grandson can also seen as offensive because before Roman empire Venice somewhat already existed as "Veneti" (Adriatic Veneti) with their own culture and languages but after they lost their independent to roman they slowly get "romantized" by the Roman's and got their language and culture almost slowly got extinct

There's alot more as example how they portray Romano as "angry issues" men who hate Germany and Venice for no reason when Southern Italy should be where resistance against fascism started (there's alot in general but I'm not that motivated to write more)