It is about your passport /
citizenship / domiciled country. Owning a house in some other country does not trigger
tax residency (probably local property taxes and if you rent it out maybe also
income tax). Owning a house in your passport country that you moved away from wanting to take up
tax residency somewhere else is a completely different story. In order for your domicile country to not tax you anymore you have to tick all the boxes that they require and as your domicile / passport country they have the ultimate control over you no matter where you are. If you bum around at a beach in Malta for 100 days a year and go to the same doctor there over years etc nobody gives a crap. If you move away from
Germany but still go back there 100 days and are being caught just having a key to an apartment there - it is game over. The basic premise is "cut all ties and be not able to just fly back and have an apartment aka shelter that you have power over (key)". If you can just return tomorrow for them that means it is still your point of interest in life apart from things like being married etc. It is dumb especially if you have money you can just move to any country tomorrow, airbnb/hotel and not give a f**k but well... these laws were never made to make sense.
The rules are different from country to country but 183 days alone is not sufficient for any halfway
developed country in the EU anymore to let you off the hook. There is even special provisions depending on which country you move to. Germany famously has Switzerland in there as that was the usual target for wealthy Germans so they made it harder for them. Low tax countries like Malta are also in the law like specific the case "you are moving to a lower tax country" and they have certain provisions for still being allowed to partly tax you or tax your for a few years after you move (switzerland), having to declare your income in the moving year and so on.