As far as I can tell, yes, it's the same. (The idea behind it in either case is to freak out your Zigbee devices that are trying to communicate directly with the hub by taking the hub away and forcing them to try going through a repeater instead.) But this isn't usually necessary except in the specific circumstances noted (for example: the hub has a 32-directly-connected "end device" Zigbee limit, so if you just added a bunch and they're all trying to go directly to the hub, this is one way to try to get as many as you can to find another way and free up some of these slots).
In your case, I don't think it would help in general. It may temporarily help when pairing non-bulb devices: leave the bulbs powered off when pairing other devices so they don't try to route through them. But Zigbee devices are free to re-evaluate routes at their discretion and may end up routing through them once they're powered back on, which is why the only certain advice here is to keep them on a separate network. Personally, I've seen bulbs just fall off on their own sometimes, which sounds like is what is happening to you too and is a bit different from the problem that is documented (lost messages from other devices trying to route through bulbs). In my case, they were Crees, and they are perfectly fine operating on a Hue Bridge but didn't like Hubitat long-term, even when only other Zigbee bulbs were on that network (a Hue Bridge network is ZLL and Hubitat is ZHA--slightly different but largely compatible Zigbee profiles in that ZLL is more or less a subset plus some differences in how they can join a network; it appears some like to occasionally fall off when in ZHA land).
If you only have two, my advice might be to replace them with something known to play nicely. Of course, I understand that this woudln't be without cost. If you do want to, Sengleds might be a good choice--they're not repeaters (avoiding the above problem) and not too expensive (at least compared to something like a Hue bulb). I'd suggest selling the Links on eBay to recover some of the cost, but I'd feel bad for whoever gets them.
There are also a few Z-Wave bulbs out there (Inovelli Illumin is new and not too expensive, either), but I'm not sure I'd fill a whole room/house with those given that there is nothing like group messaging for those (which can help eliminate the "popcorn effect" when manipulating multiple bulbs and improve speed and reliability). With only two, it may not be a big deal. Just some other ideas! If you think you'll eventually add more bulbs, a Hue Bridge (or second hub, but I'm not sure that will help here) may be a good choice.