One who unquestioningly supports something/someone. A MAGA individual would glaze Donald Trump. It's always (as far as I've known) in the negative - accusing others of being too into something.

I'm pretty sure it's got something to do with slobbing on knobs, but I'm not certain enough to verbalize it

I see it particularly used in reference to LLMs "glazing" users, i.e., validating and praising them and their ideas regardless of merit.

Someone who makes windows. This is a virtual one who took corporeal form.