It’s a feature not a bug. A feature to maximize profits for of the vendors that create your hardware that is.

For vendors a so called vendor lock-in is a great way to make money. Hence they have an incentive to make their stuff not work well with other stuff so they can sell you more of their stuff.

Now, in some cases they have to implement compatibility, because otherwise they’d have trouble getting customers int he first place, but in it’s often obvious that playing well with others isn’t a priority.

Hence solutions like home assistant rely on shoddy interfaces and that shows in the form of issues. Besides, it’s a volunteer driven application. You can’t expect the people who make it in their free time solve all the problems for you.