That's funny that they think that the number must go up. Phones are getting more and more powerful, and I've actually seen pretty impressive desktop modes for them. I'm not talking about $1000 phones either, but $200 phones. You could easily do office work on such a phone with a docking station, plugged into a monitor with a keyboard and mouse. You can even do some decent gaming on such a setup.

Besides that, hardware in general just lasts longer. I built my current PC in 2016 that I'm still using and can still play new games (I played Armored Core 6 to completion most recently). With the laughable prices of graphics cards now, I'm content with keeping this system going for even more years. I may even opt to go for an APU in my next build, if only to tell nvidia to fuck off with their price gouging.