Yes there is alot in Hetalia! , I don't deny that. For example Finland / swedens relationship in Hetalia (also since I have been not into the newest season so much ((I have whatched a few episodes )) the new season seems to only be about fanservice I can't deny that either) . But often people say there is alot of real"yaoi" in Hetalia when all they are aiming at is the fandoms work and not the canon one.
Also since you said "fanservice in hetalia" don't forget that I was not aiming at the "see america with no shirt moments" Even tho I really don't find anime/animated guys attractive .. I just can't or "see Ukraines breast be overly sized and jump around in a way breast just can't" Tho that is just weird... I only spoke of the gay service.
I would glady enlighten you! Tho Satw uses fanservice for the sake of humor such as the "yaoi" thing between Germany/norway/denmark .but It is still canon.
Even tho now when I really think this trought Satw is more about humor (even trought Hetalia was about that as well but the latest season is just ... well fan service)
So well you were quite right as well and I won't say your opinon is wrong or anything like that.