Yep. And if anything, it's getting worse.
At least modern PCs truly are better; they're almost always faster, cooler, quieter, consuming less energy, etc.
Whereas, I'm still using a Note 3 with CM13. While I am quite happy with the performance, I would like a better camera with manual controls and more RAM. But there's nothing I can upgrade to without sacrificing something.
As far as I can tell, the Note 3 was the last device made with a removable battery, MicroSD slot, temperature, humidity and barometric pressure sensors, AMOLED screen, 10,000mAH battery compatibility (ZeroLemon), GPS and a full 9dof IMU package. Some new phones came close (the v20 tempted me) but lacked a few of these features I use every day.
I fear that once this phone dies, I'll just have to find a used one on eBay to replace it with. The frustrating part is that I have no budget on this one; I'd pay $2000 to get a state of the art replacement that "does it all" and upgrades the CPU, camera, storage, etc.