FWIW, that’s not ever been claimed to be a copy of the original birth certificate. That’s a “certification” of live birth, based on the computerized data base of the original records, which is what Hawaii currently provides for people to establish proof of birth, as for Social Security and passports. Since it’s a computer-generated representation of the data on file, it’s not unreasonable for it to be in a modern computer font.
I was under the thought that the originals were scanned for distribution. At least that what mine from 1965 look like - a scanned original.