Hi ratistuta .... those eligible to countersign passports were usually more than happy to do so in the past, especially in cases where a fee was charged for the privilege.
However, it is no longer a case of simply signing the application, as the countersignatory now has to enter their own passport details on the form as part of the security measures implemented by the Passport Agency. The countersignatory should also retain the form and send it directly to the Passport Agency, rather than hand it back to the applicant to do so.
Some are reluctant now to countersign forms, either because they don't want to supply their own personal details or have their status verified as part of security checks, or they may not want the applicant to have access to their personal details, or they may not want the responsibility of forwarding the application to the Passport Agency.
David