Some of them are. According to wikipedia, it originated as a communist movement but later became a different name for “classic liberal” because American left-wingers “stole” the term “liberal”.
I guess you could argue that classic liberal cannot be conservative because they don’t want to conserve the status quo, they want to go back to some earlier state. But when you present some regulation in front of them, they take the conservative stance - being against it.
On a different note OP hit itself in its confusion, there are definitely libertarian Linux users. Look at Mental Oulaw (anarchist) and Luke Smith. edit: or go to some Odysee comment section. Apart from the crash test dummies who hate Mozilla because “the trannies!!! >:(”, you will find libertarians.