The ride op is 100% correct and doing his job in this situation. Sorry that you were scared of the ride, but honestly, you're fine. You stopping the ride op TWICE to ask to have your restraint re-checked actually delayed the dispatch of the train. Don't do this again!
Thank you. Working at a B&M hyper my biggest pet peeve is when guests freak out before dispatch after their restraint has been checked because it is not stapled to their body, and ask a ride op to come and push it down another click, delaying a dispatch. Same at inverts and flyers.
I don't know if this has changed but you can see in the beginning of this video that restraints on Silver Star at Europa park are not checked physically unless it is a large rider:
I know Whizzer at SFGAm restraints are checked Disney esque where they ask you to pull up on the seatbelt yourself.
To those thinking that restraints have been checked since the beginning of coasters are not informed. Whizzer at SFGAm opened without a restraint! And most coasters did not have airgates until a decade or so ago. I know on a lot of older wooden coasters that opened with buzz bars the restraints would be checked as the train was dispatching or not at all.
Also, seatbelts on most rides are totally unnecessary. Thankfully Six Flags did not follow cedar fair in adding seatbelts to their hypers and arrow coasters. Hundreds of millions of rides have been given on B&M hypers without incident. They are fail safe... Whole point of a restraint. The seatbelts on OTSR rides are actually there to limit the size of guests who can ride and that is their only purpose. The restraints can not fail! Unless of course you are at a park like Mt Olympus where I would not trust the restraint. But any major theme park inspects every restraint every day. A seatbelt is completely unnecessary.