Pentax Q lens mount slightly wobbly
I haven't noticed this (or looked for it), but I'm not surprised. I once handled a newspaper photographer's battle-worn Nikon F and marveled at how loose the bayonet lens mount had become. That camera still worked well enough, however.
The old Pentax/Yashica screw mount for SLR lenses was probably the most solid, positive and resistant to wear of them all. There was zero play. The downside is that compared to a good bayonet mount design, screw mount lens changes took slightly longer and some users found them more tedious to line up.
I think the play you describe in the Q zoom's bayonet mount is negligible and will never present a problem, not even if you were to do a dozen lens changes a day every day.