Indeed, I have a NOS FCU from circa 2004, put it next to a current one and the quality difference is very obvious..Superficially they look the same from the front but everything is worse about the 2021 item, terminals, layout, grade of plastics used, overall weight, metals used, general feel and heft.
I'd happily pay more for a return to previous standard because I have thousands of Crabtree accessories out there in hundreds of installs and its nice to provide continuity to customers and an assurance of quality.