Like some other projects, it's fine to 'create' a page to them even if you don't link to the patch itself (Final Fantasy Type 0 is one such case).
There are also less stringent borderline cases where a externally hosted patch is linked because of the space restrictions of romhacking.net.
This might be considered useless, but it's actually quite useful for scripted tools and documentation of the last version of the patch, team members, md5sums, readmes etc.
For example, i use romhacking pages with a tool i created to check when a patch needs a update and to create dat files for the patches applied to the rom checksum (which i then submit to retroarch for the patches and games i actually have).
The romhacking page metadata is not the best for this (because the checksums sometimes aren't in a standard format and are difficult to parse and are often wrong), but just the update check is useful and doing the checksum locally is not so bad if you have the games.
So yes, you'll not be able to host the patches here, or probably even link them, but I for one would appreciate that the page was created anyway and the version updated once in a while.