The map is wildly simplistic, as usual for these Internet takes lol.
In Portugal, for example (where I come from), I don't know anyone that keeps their shoes in-doors 95% the time. If you're doing some quick work or holding an event, people might be a bit more lack about taking off your shoes, but I (and many my friends) always make an effort to take some kind of home footware when visiting other people's homes. As a general rule? Everyone puts some socks/sleepers/flipflops on.