Do all ATC units determine if all pilots are IMC rated at time of booking out if a SVFR clearance is requested or deemed necessary by ATC? I don't think they do; I think they should do so.
I dont.
AT are a service providers, not the air police.
If they were (the air police) they would be asking before every flight at sunset whether the pilot had a night rating in case he arrived back after dark, or whether the pilot had a current C of A.
It is not their job.
It is the job of the pilot to ensure all the appropriate bits of paper are in place to make the flight.
On another note - the thought occurred whether the aircraft was rented from a school. No excuse, but I have know the club to get onto AT and ask them to tell XYZ to return to the field (for various reasons) including knowing the weather had become outside the pilot's limits / rating. No excuse of course for AT dealing with it in the way they did - I was just wondering about the background.