The most of EU countries has changed a law in a last few years.
Source?
And CVI is in each country where you own or have rented residential property for 183+ days per year even if you do not spend 183+ days within a country.
Most high-tax countries have had such rules since forever and they are NOT about CVI.
You still don't understand the difference. Germany for example does not have a CVI under domestic law, but having a key to an apartment would make you tax resident.
By contrast, Estonia and Lithuania (not sure about Latvia) don't consider you tax resident if you own an apartment there - but if it's your CVI, you would be tax resident. Big difference.
They call it rule of a toothbush. If you store your toothbrush somewhere permanently and you do not bring it with you, it can be considered a CVI.
What if I rent a place the whole year, but I take my toothbrush with me when I travel?
Germany has a "habitual abode" test, for which the toothbrush would be relevant. But you're just throwing it all together and talking about "EU", when every member country has their own tax residency rules. And tax law varies a lot within the EU.
So the best way is to travel within civilized world and nowhere own residential property, nowhere have rented residential property long term.
Having rented something on AirBnB for 2-3 months per year and move to another place afterwords is OK.
It has always been like this. Since forever basically. And some countries can consider you tax resident even if you spend less than 3 months there, Switzerland, for example.
Most countries can also consider you tax resident if you have a spouse (even if separated) or child under the age of 18 in the country.
You have to check your individual situation and the rules of each country. Don't just assume "oh, it's all EU, they're all the same". Absolutely not.
By the way, Sweden will most likely implement a new law next year with a strict 120-day rule since I guess even the Swedish tax office realized their current rules leave too much room for interpretation.