The regular /usr/bin/ld is the llvm linker.Also ripped out of llvm90. The wiki you linked to can very well lead one to conclude that Clang can use either LLD (if told to by the makefile) or the regular /usr/bin/ld.
You can clearly see from the source code https://github.com/freebsd/freebsd-src/tree/main/contrib/llvm-project
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If you can use the GNU tools like the linker with clang (which maybe u can with a little bit of work, as said Clang is only the front end) that isn't what the FreeBSD project IS doing (Probably because LLVM libraries are used at build time anyway) .