If the user manually pauses anything playing, mpd-watchdog will not stop you from pausing.
The problem mpd-watchdog solves for me is ensuring that a stream continues playing even if the internet drops out for more than a few minutes. Try it!
To simulate an internet connection outage, simply unplug your ethernet, or for wifi, turn off the router. If you have a radio stream playing and the internet reconnects within about about 30 seconds, then the stream seems to continue playing when the internet returns. However, if the internet is off for say more than a minute, the stream will appear to still be playing, but no audio is outputted. Without mpd-watchdog I have to manually click on the radio stream again - annoying when I wake up, and turn on my speakers to find no audio after there was a short internet outage overnight.