Well, there are so many sides to this coin. Like here's a good one. Even our 3 unplanted tanks which are our whites(moe larry, and shemp), the beardies(monster and lil bruddah), or the pacman(bigweld) we also include a full spectrum bulb. Our belief if the closest to natural sun we can get, the better. Glass reflects uv, not absorbs it, remember this, so with nice clean glass, we still 'believe' that they absorb small amounts of all the uv no matter what. Keeping in mind uvb needs d3 and all that. The bulbs do not provide what they fully need. They aren't the sun, and no matter how hard we try with our planted viv's its still not real nature. So on top of all the uv everywhere we rotate supplements every other feeding. From regular calcium, to calcium+d3 to fill in the gaps. Then theres gut loading their food. Ah. Another odd thing we do. Well more my doing than the wifes. I like to do an electrolyte soak once a month for all my animals. We use zoo med electrolyte. Needed? Probably not. Is it good for their immune systems and full of other important vitamins they can soak in, yes.
Many moons with snakes. About 3-4 years now with frogs. 2bps, mom wanted my red tail so i hooked her up, firebellies,red eyes, whites, pacman, anoles, longtails, and damaged beardies we adopted from petsmart. 2 casualties. 1 was a whites from petco in his dying throws from mbd, the other a baby pacman(poor aunt fanny) fell victim to a power outage while we were away. Also another reason i been banging my head over solar.
But overall, no real health issues, good checkups, no, well anything. Maybe its overkill, but it works out great for us. So we think uv helps.