I can do all of those things on my phone (and I do!)

Not all things are quite possible on a phone or as comfortable as you could do them on a PC (I couldn't imagine coding on a phone).

And things aren't always as comfortable on PC as they are on a console. I would much rather the streamlined experience and guaranteed compatibility of a console for playing games, in the same way you would rather a PC for coding over a phone.

I'd love to see people doing their taxes on their console, since by that argument it would be more streamlined.