A Hypervigilant or Safety Conscious Ref?

[Kansas Ref]

A buddy urged me to partner with him for a men’s wreck league benefit fundraiser tourney last Saturday and Sunday-- eight teams playing 2x elimination. It was my first time doing a game at this particular venue ( a local Ymca gym) and the crowd was mostly wives, girlfriends, and supporting family members of the teams. Lots of women, kids and grandparent/relatives and some business community sponsors in attendance. So, here was my issue: there was this one player (fairly talented but somewhat cocky acting) who would let his mouthguard [MG]hang out of mouth during active play. Think “steph curry” like he lets his MG dangle halfway out his mouth dripping slobber all over the place like steph does when you see NBA on TV. I will call this player “pseudo-steph” (PS). Well PS is at the FT line in first half and MG is dangling. I notice it because this MG is one of those kind of colored ones with colored faux teeth area. I told PS to put his MG back in properly when active play resumes or to remove the MG entirely—he nodded “OK” in a dismissive fashion; the other players on the lane positions poke fun at him saying stuff like “you better mind that ref” or “yeah keep that slobber to yourself” , etc.. FT’s are completed and play resumes; then as PS is playing defense his MG is dangling and slobber is there and he is knaw-ing on it—I get a good look as I am in T position. I immediately whistle the ball dead and issue an “unsporting tech” on PS. Then PS says “what I do ref?!” to which I replied “your MG is dangling and you were warned 30 seconds ago about it”. He mumbled something inaudibly under his breath as he walked away—that I presumed was not “merry Christmas” then walked the other way. He did not allow his MG to waggle anymore.
Question I have is: was I being hypervigilant? Was I protecting the safety of other players [and quite possibly also of PS]? And/or would any of you’all have done a similar officiating action?