I think we'll be fine sticking with nintendo-switch without the synonym - typing 'switch' into the tag field will already bring up the nintendo-switch tag and now that the switch tag is uncreated, only 300+ rep users can bring it back unintentionally.
- Unambiguous - people misuse ambiguous tags all the time. switch could be used for anything: switching consoles, switching camera perspective, mechanical keyboard switches, switching weapons and so on. Let's make it perfectly clear what this tag is for.
- Full name: 'Switch' as in 'the Switch' or 'my Switch' is colloquial. 'Nintendo Switch' is the device's full name as used by Nintendo:
- Official: Nintendo uses 'Nintendo Switch' in all official advertisements. Shops like EB Games/Gamestop use 'Nintendo Switch'. This contrasts with consoles like 'Xbox One', which is known as 'Xbox One' and not 'Microsoft Xbox One'
Let's not overcomplicate this by unnaturally shortening the tag because of 'convention' - a convention already broken by nintendo-64 as Nzall has covered.
I think we should be consistent in how we define consoles.
playstation, xbox, wii, windows, gamecube, ds, snes and psp are all tags that don't include the manufacturer. I don't think we should change this for the switch. I mean, we didn't do it for the Wii, the DS or the 3DS, which all are known with the prefix Nintendo to the general audience. The only console that's fully known with the manufacturer name is the nintendo-64, and that makes sense. If anything, nintendo-switch should be synonymous to switch, just like the other nintendo-x tags are synonyms to x