Yes that is correct, they have the same problem regardless of which Zigbee Gateway you use.
Note that since the issue is bug in the device firmware the problem is sometimes only in a specific firmware version.
Most devices that are infamous for having these types of bugs have never gotten official firmware upgrades, (and many do not even support OTA updates at all), but some might have a new revision come with newer firmware from the factory without getting a new model number, so it can be a gamble buying old stock from a store or buying used hardware if it is one of those models that is known to have buggy firmware.
FYI, I posted a feature requerst to the zigpy/zha developers for that idea of having warning with comments for specific Zigbee device with known issue inside ZHA UI, so you guys could add to that list I started there with the infamously known problem products that I have read and/or used myself:
From what I know, the official spec states that all mains powered (110/230V) Zigbee device should be a router.
I am only using Philips Hue lights and all types are routers. There’s only 1-2 models with built in battery that are end points only. All their buttons and sensors are end points as well.
I was running a combination of Z2M and ZHA for over a year, as power plugs with energy metering caused the whole Z2M network to slowdown so I had only my power plugs connected to ZHA.
Recently moved back from Z2M+ZHA to just ZHA, since I switched wall buttons from FriendsOfHue (ZGP) which is not supported by ZHA to the Philips Hue Tap Dial Switch which is just an endpoint device with battery.
That switch was added in ZHA 2024.10.0 release. Before it was added it constantly crashed ZHA, which is why I tried it in the past and moved back to the ZGP buttons with Z2M and all my lights in there.
The thing about specifications, is that manufacturers would actually need to follow them and most don’t bother. There are many mains powered devices that don’t route.
Here’s an example:
That said, I’m actually of the opinion that bulbs shouldn’t route, since they can be easily powered off.