Yes it is not perfect. At least in Lithuania you can use government issued personal ID to sign PDFs that pass Adobe/Foxit checks of signature authenticity. Trusted timestamp is part of a valid signature as it allows to check validity of signee certificate at the time of signing.

Adobe says: Source of Trust obtained from European Union Trusted Lists (EUTL). This is a Qualified Electronic Signature according to EU Regulation 910/2014.

Foxit says: Source of Trust obtained from European Union Trusted Lists (EUTL). This is a Qualified Electronic Signature according to EU Regulation 910/2014.