> Bufferbloat should not matter for your home connection. (Unless it is constantly in use by more than one client.)

That is wrong. A single client can saturate the connection easily (eg. while downloading a software update or uploading a photo you just took to the cloud). Once the buffers are full, all other simultaneous connections suffer from a multi-second delay.

The result is that the internet becomes unusably slow as soon as you start uploading a file.