I wasn't worried. Perhaps in part because riding my bike after a 1200km event doesn't seem too appealing. Screw the damn thing, you know?
Outbound to Paris for PBP, three people I know arrived without bikes. All were found in time for the ride, but one guy had to drive a few hours to pick it up. Stressful.
People are putting apple airtags in bike bags, for peace of mind.