ha ha ha yes!! just yes!!
although not just yes there is more....
I had the exact same experience trying to report a scam phone call from "Microsoft" who needed access to my computer apparently.
(Which is interesting as I have two devices at home one a chromebook, and one a laptop running linux.)
Anyway the action fraud website form didnt even ask for the telephone number they called from. It was a series of about 6 dropdown boxes on the type of fraud attempted.
I pressed submit and was shown a thankyou.
Wow. So as you said its simply a statistics gathering website.