Apple doesn’t exactly try to converge OS platform, even forking off iPad OS from iOS
It is more that they couldn't figure out how - but they keep on slowly removing bits of all three and making all of them act the same way, so eventually they will be one bloated monolith if they continue down this path.
One would think that MAGA would be enraged at all the waste, fraud, and abuse in this process of inhumane torture, their tax dollars being wasted.