I’d say it’s mostly garbage. It introduces annoying pop-ups. You can turn them off but it’s grating.
E.g. every time you connect to a new screen it asks to go into presentation mode.
I’d say anything parallels toolbox can do, I can find an open source tool which can do it better. Sort of a jack of all trades, master of none.
Though I could see it being useful for a non-power user that is afraid of installing software.