As it stands now I don't care at all who made my Z-wave switches/bulbs/plugs

This is maybe an optimistic view of Z-wave in my mind... early on quality and reliability problems were nearly universal with Z-wave devices, and today I have a fairly short list of brands I trust (e.g. Zooz) after having been burned by a series of devices with various firmware bugs or just very poor lifespans. The best story I have is the lightbulb that would turn on every time it received an explorer packet, and thus every time my hub at the time ran a heal, which was of course scheduled at 2AM every day and not easy to disable due to the hub's poor firmware. This was years ago, but then there's still a surprising number of Z-wave devices on the market that are just Z-wave, not the poorly named Z-Wave Plus or Z-Wave Plus V2, and thus have significantly inferior network reliability if there are any changes in the environment. In any modestly challenging environment (e.g. battery powered device a few walls away from the nearest powered device) I have gotten used to having to try out multiple products before finding one that was reliable, and that was even after learning not to buy anything that wasn't at least "500 series" (Silicon Labs part number for Z-Wave Plus).

Even Enbrighten, a former GE brand and so ostensibly reputable (this of course depends on how familiar you are with the GE of today) is shipping some total garbage that they haven't even bothered to develop real documentation for. Curiously, I've found that some Enbrighten products and Zooz products are physically identical to the degree that I think they are both sourcing some of their hardware from the same manufacturer... but Zooz has very noticeably superior firmware.