Gaining popularity in the ever shrinking market of PCs is nothing to brag about. I'd wager it's still not that popular as you make it be. Everyone just buys laptops nowadays and whoever they do buy PCs they get the full sized towers with discrete GPUs for gaming, not small form factors with APUs. That's more of a niche of a niche.
That's why AMD hasn't focused too much on APUs for desktop PCs. It's not a big market. Their biggest sellers are APUs for notebooks and consoles, CPUs for datacenters and desktops, discrete GPUs for ... everything.