I'm guessing they're talking about midgen refreshes like the Xbox One X and PS4 Pro. So essentially you'd have a cycle of spec bump - new architecture - spec bump every 3-4 years.

Last gen really benefitted from the mid gen consoles given the move to 4k and in the case of the Xbox, simply underpowered hardware compared to Sony. That's not the case with either machine this generation. I'll continue with my plans to build my first PC in over a decade given more of the games I want to play are either on PC first or PC only, and console games tend to lack mod and peripheral support relative to PC.