Unlikely. There is also image and video editing, which is best done on a PC (either Windows or Mac). Phones and tablets are powerful, but they still haven't reached the level of performance laptops and desktops. Because even ARM CPUs require cooling. The more powerful the CPU the more heat it generates. That heat has to be dissipated. Storage is another factor; both in capacity and heat generation. Sure, cloud storage is great, but it is slow and if you get dropped offline, you lose access. Then there is battery capacity. The more powerful the CPU the more power it needs. More power capacity also generates heat and requires more space.
Nope. The desktop/laptop form factor running Windows or MacOS are not going away. If anything, ARM will give them a new lease.