Newer AVRs are built for video not audio, and are built to die shortly after the warranty expires.
I agree with that to an extent. I would rather AVR makers in their mid-price range (mine) concern themselves more with audio; amplifiers, DAC's etc. As I scream to any one that cares to listen, most of the "features" I don't want or need. I mean, how many darned analog stereo inputs do you need?? Useless in their entirety to me. Toslink? pffft. Chromecast /Sonos/Bluetooth? pffft.
As far as longevity, I have an older Onkyo (TX-NR609) that was repaired once, and I recapped the HDMI board and gave it to my Daughter. I have an Onkyo a little newer than that one (TX-NR656) that was trouble free when I shelved for the TX-RZ50 last December.
Not even a modern AVR by any means, I have an old Sherwood RD-6105 5.1 analog input that I bought as a display model, no box or remote, way back from a business that was folding up.
It was my pc sound system for years, now doing duty to run my side surrounds from the RZ50's pre-outs.
As you relate, not very tall compared to the newer Oinkers. Heavy lil bassard as well! Still holding up well I'm happy to say.