I think that most opinions regarding entertainment are not "valid or invalid" though. That's why I opened my post with sympathy. Hell, I've had many times where I thought the Switch was trash. Mine was collecting a lot of dust until very recently (and the process of rehabilitation only started because certain users were kind enough to gift me a game). It's all about the arguments and how well you support them. And really, that user didn't support his points well. His reception of the Switch isn't inherently wrong, his way of trying to rationalize and back up those sentiments just used faulty arguments.
And I should have made that point. I actually meant to but sort of forgot, took a while to write that reply. However if you see the list of games I showed for 3DS and GBA that were also ports/reimaginings/remasters/collections I mention Mario Party Top 100 and Metroid: Samus Returns. It should kind of be self evident then that a big factor is support for the 3DS, although I'm sure he already knows about that and doesn't care.
We don't even have to discuss it, the work is done. Look at my Mar127 reply chain.
It's certainly not a black or white thing when it comes to opinions on entertainment, but in this specific case we've had measurable metrics such as quantity of game releases, so objective conclusions can be made and not every opinion is valid.
I can see why you had sympathy when you were guilty of the same type of rants yourself in the past. In any case, I don't think anything more needs to be said from either one of us, but you are of course free to get in the last word.