I’m a sucker for lighting gadgets myself but I’d stick with more conventional ones here. First, they’re probably harder to replace (and can’t readily adjust settings anyhow) but mostly because you (probably) want them to match each other. The lamps with the most doodads will fade, flicker and drift in color among each other and that will be most obvious when they’re all in a row/fixture.
I always wondered about those in theaters and in big churches (arenas, ice rinks, etc) with chain hung fixtures.
We got some new outside LED lighting installed (hard wired into the wall). When we turned them on, their color was not as expected. We were about to call the installer to complain they didn’t set some internal switch correctly. But after reading the instructions more carefully, we discovered the lights toggle through three temperature settings by the simple process of powering them off-on in less than a second. Weird, but effective, interface.
I imagine that trying to use the pole with suction cups for a chain hung lamp would be a challenging experience. Our theater lamps were the standard recessed bulbs like you might put in a suspended ceiling in your basement, with a relatively flat front, so the gadget had a fixed target and smooth surface to grip.
Cherry pickers or scaffolding. You don’t do just the one that has failed: when it’s time for maintenance, you bring the equipment in and do everything all at once.
Some places, you can just drop the fixtures to ground level.