If people can learn to semi master their smartphone apps and do basic things on their computers, then complaining about managing audiovisual is silly.
My ex-GF always complained about the system, yet she was smart enough to keep concealed communication channels alive to cheat on me. So... BS. It's very straightforward.
I do have a universal remote, yet no one likes to use it (even myself), it's weird.
A judicious amount of remotes ultimate seems the most straightforward way... I have two,,, one for the amp, one for the Roku (TV). Both are simple. Way more so than smartphone apps (I tried, abandoned) or universal remotes (you have to remember the workflow, and know how to get them out of the last device they were controlling).