I use it because everyone knows the general set of ideas an adherent of it has, whether or not they claim to be part of the ideology. Its the same as me using

I use it because everyone knows the general set of ideas an adherent of it has, whether or not they claim to be part of the ideology. Its the same as me using the term "rightoids" when discussing opposition to something like building bike lanes. You know exactly who that person is, and you know they exist.