Uhhhhh. The article you linked says nothing about “free as in air”, which is the term you used. And thats the only reason i used it

Free as in speech or free as in freedom are the english similes to express the idea of libre

Free air or free beer are gratis. Without monetary cost.

en.wikipedia.org/wiki/Gratis_versus_libre?wprov=s…

Free software is always libre and sometimes gratis