With its use of ... (a) partially borrowed script and threadbare plot, Privacy is more of a show than a play. But it’s a decent show.
If that's your premise, I'd wholly disagree.
Is it the show's intention to make us think, challenge our preconceptions, change our behaviours ?? If so, then a show won't do it. It needs to be theatre - proper theatre. I've done no stage stuff since my school years, but my son went from the Brit shcool to MMU Crewe's CTP course. I understand from him a little of how theatre should work, and always remember his utter disdain for the show of the Hutton Inquiry, where the thing was read out verbatim. This neither challenged the audience nor added anything to the corpus of knowledge - and from this description, it seems Privacy is much the same.
Still, maybe I should go see it just in case....