@bsdphk It is if the involved institutions have a history of losing confidential data. LEO agencies are targeted right now even with the limited datasets they have. I don't believe they're competent enough to be trusted with key escrow.
Most recent big accomplishments of Europol:
Losing physical files on their own personnel: https://www.politico.eu/article/europol-internal-agency-eu-police-agency-engulfed-in-clean-up-over-missing-files/
Publishing terrorist investigation data and hiding the leak https://www.nu.nl/binnenland/4357991/terrorismedossiers-straat-groot-veiligheidslek-europol.html