Just because something is costless to exhibit doesn’t mean it was cheap. A rolex or designer hand bag is expensive to obtain but costs you nothing to exhibit. Same with luxury beliefs.
Luxury beliefs are not cheap. They're expensive. Takes yrs to cultivate an understanding of them; to keep up with them, to express them without error. Helps to be immersed in affluence from birth. This is why Bourdieu, Fussell, Fitzgerald etc wrote real mobility is something of a myth.
Saying defund the police in 2024 is like wearing Canada Goose in 2019. You reveal yourself as behind the fashion; a wannabe; an arriviste. Cringe. etc. Gotta be close to the source of the trends (typically elite institutions). Requires money, connections, cultural capital etc.
Luxury beliefs are expensive for the believer to acquire (money, connections, education, habitus, cultural capital, etc.) and costless to express.