Since it’s so quiet here, let me start :)
The Steam Controller, albeit being discontinued in 2019 is still going strong here.
I like that you can easily replace the two AA batteries and even though the original wifi dongle broke somehow, it is possible to just link it with Bluetooth as well.
No, it is true that console ports that are highly optimized for the standard controllers do not work as well with the Steam Controller. Same is true for old emulators that need a real dpad. But for pretty much everything else the Steam Controller is great.