We're talking past each other.
We seem to agree that, when talking about general usage, an Apple computer can be, for all intents and purposes, a personal computer. Yet you refuse to address that fact that is is, is many useful and common situations - such as coding, software and hardware compatibility, and just unambigous common parlance, not a PC. It being so similar in some instances, and completely different in others is why it's problematic to call an Apple computer a PC.
Main main issue with the term portable being used as noun "a portable" is that it is clearly ambiguous... read the thread! It is to some and not to others. It's not a useful category, like handheld was. It doesn't distinguish anything. Of course the Switch is portable. It is highly portable. Is it a portable? Well, we're back to strict categorization being problematic.
I didn't refuse to address it at all, it's clearly not relevant as I've stated, but for argument's sake, let's say I bring up what you mentioned about coding, software, and hardware compatibility: 1) Why does it matter if devices have different programming languages? Fundamentally, there are similarities between multiple devices even if the programming language they were brought up in, is completely different from one another. That doesn't stop them from being considered PCs. This would be like me saying "well an Android Phone does X, Y, Z, differently from an Apple phone due to the nature of their operating systems and how differently they handle each function, despite the fact that both products basically do the same functions" and then going off and saying how one of them is not a phone. It's a silly argument that accomplishes nothing other than to create lines because people care more about brand allegiance than they do about what the device actually does. 2) Related to programming language, software compatibility falls under the same problem. Does a device stop being recognized as such simply because there are different applications that accomplish the same thing? Macs have access to Microsoft Office even if it's completely different in development compared to Windows MS Office? Are they any less of a PC despite the fact that both apps accomplish the same things? Again, another silly argument that disregards what apps are available in what OSes because you're focusing on the pedantic elements that ultimately do not matter much. 3) Hardware compatibility means what exactly? Are you talking about when you have to upgrade your parts? Or are you talking about proprietary hardware? Because if it's the latter, then by your logic, any old PC in the 1980s are not PCs because of their propriety nature up until IBM decided to open it up. Even then it runs into the same problem as the other two components, focusing on things that has nothing to do with general use of the device. The choices that a manufacturer makes, does not affect whether I or anyone else use the device as a PC. All of which is the reason why I said it's irrelevant in the first place.
If you also read the thread, you would realize that the main problem with portability is not the "ambiguous" nature of the word, the word itself is very clear. One of the problems is that people mistake portability for pocketability, which has nothing to do with portability in the first place. Portability isn't limited to JUST taking your devices and putting it in your pocket. It's why no one mistakes tablets, and laptops for being portable devices because they recognize that there are people who take these devices on the go, and yet, people have a problem with the Switch because they cannot simply pocket it, when you can just as easily pack it onto a bag and maintain its status as a portable device.