I would suggest a better question is why does it matter?

My point was:
Wii U competed with the PS4 & Xbox One.
Switch competed with the PS4 Pro & Xbox One X.

The argument that Wikipedia can be edited by anyone doesn't mean that the given information are wrong. Everything gets constantly checked.

This. Certain articles are incomplete but on the whole, Wikipedia is pretty accurate.

My point is:

PS4 Pro and X1X are just beefed up versions of the same PS4 and X1.  The Switch is a completely different device independent of the WiiU, and therefore Nintendo's next gen console.

As for wikipedia, I guess the people constantly checking it are just as capable of being misinformed as anyone else.

i can edit on wikipedia =)

I HAVE THE POWA

Lol. Wow. That's quite the split in votes.

But arbitrarily lumping of unrelated consoles together from different companies just seems a waste of time, proof is how many people argue over this constantly, as it's not clear and intuitive at all, but hugely subjective, just a waste of time and angst, people should be pursuing more meaningful discourse     

Wikipedia cannot be willy-nilly edited to change it to whatever you desire... I always find it baffling how people are quick to throw out Wikipedia because it can be "edited". - It's more of a strength than a weakness, it means the information typically is always the most up to date.

And to make significant alterations you do need a thing called a "citation". Aka. Evidence to backup a claim... And often your evidence will get rebuked if a better piece of evidence gets presented.
Otherwise your alterations can and will be reverted or changed to something else.

Now wikipedia in this instance isn't providing a citation for it's assertion that it's an 8th gen console, but they do state that because the Switch's primary competitors are 8th gen consoles, that it's an 8th gen console.

Nintendo consoles now only have generations in relation to their own products , since they have the most self contained ecosystem of the three,following their own schedule was a natural outcome , we have had differing release dates before the only difference is it's now pronounced but it doesn't mean much. we will still see the currently available consoles and their sales graph on the main page, sure some historians and others who use it as a framework when collating data over time but they will use whatever suits them, but imo for the rest it's better left in the past.

Which brings us back to the point that the curators of Wikipedia itself having the ability to be misinformed, just as anyone else.  The problem also lies with their logic.  If Switch is out another 3-4 years (which is VERY likely), then it would have competed against the PS5 and XSX for just as much time.  The bigger difference is that the WiiU was Nintendo's gen 8 console, so it would make more sense to group Switch within gen 9 under those conditions.  It just means Nintendo launched theirs 3 years before Sony or MS did.

So let me ask you this, would you consider the WiiU a gen 7 console for 1 year of its life, and a gen 8 console for 3.5 years of its life?  The concept is the same as it competed against the PS3 and 360 for that first year, but with the Switch's longer life cycle it would just be spread across a shorter range of time by comparison.

I mean if you really wanna break it up like that, I guess you could.  But it makes the concept of number generations even more convoluted than they already are.