I was involved in design of the new Champlain bridge in Montreal.
I have an Ontario PEO licence.
I got a temporary permit with OIQ, Quebec's engineering regulator, after agreeing to pursue a more permanent license via OQLF certification of my ability to handle myself en francais.
Ended up with a permanent OIQ license contengient on getting OQLF certifiacation.
I can do ok in written french. not great, but passable.
My ability to wing outside of my technical realm it is not too great though.
The last OQLF test I failed was to write a professional letter as though I was a primary school teacher.
I had to write to the first generation immigant parents of one of my students suggesting they get their son tested because I suspected that the child had a learning difficulty.
IMO Quebec does really not want anyone to be professionally licensed in about 20 prefessions unless you are fluent by doing all of your preceeding education in the province.
So I can see where the event being discussed is a real world situation that happens likely often to non francophones in the land of PQ.