OpenBSD has around 500 programs with pledge support in base. edit: and this number does not even include the ports available with pledge support, among others

OpenBSD has around 500 programs with pledge support in base. edit: and this number does not even include the ports available with pledge support, among others chromium.. and the fact that they were capable of adding pledge support this quickly says a lot, imho, about the implementation differences between libseccomp and pledge.