IMHO the "average user" has indeed mostly abandoned PCs in favor of tablets and smartphones, as far as home use is concerned.
It does not matter how often people repeat this there is no evidence to support this broad claim. People are not replacing their PCs with smartphones (and neither tablets) what happens is that more smartphones and tablets are sold then PCs. That does not mean that people throw away their PCs and use them instead.
Mostly use them in addition to their PCs. People tend to not buy new PCs anymore unless the old one breaks because there is no reason to do so. They consider their current hardware "good enough" for their tasks, so no need to upgrade. So the saved money is spent elsewhere (ex. tablets).
Smartphones otoh are mostly replacing traditional cell phones not PCs.
(Note: PCs in the above text includes laptops and Macs).
Re: Thoughts
It does not matter how often people repeat this there is no evidence to support this broad claim. People are not replacing their PCs with smartphones (and neither tablets) what happens is that more smartphones and tablets are sold then PCs. That does not mean that people throw away their PCs and use them instead.
Mostly use them in addition to their PCs. People tend to not buy new PCs anymore unless the old one breaks because there is no reason to do so. They consider their current hardware "good enough" for their tasks, so no need to upgrade. So the saved money is spent elsewhere (ex. tablets).
Smartphones otoh are mostly replacing traditional cell phones not PCs.
(Note: PCs in the above text includes laptops and Macs).