Wouldn't even just supporting samba, nfs alone without kernel module will make the kernel bigger than needed? Or does OpenBSD doesn't support those network fs

Wouldn't even just supporting samba, nfs alone without kernel module will make the kernel bigger than needed? Or does OpenBSD doesn't support those network fs neither? If smbd/nfsd build in by default, wouldn't a single kernel image with samba/nfs build-in to kernel by default trigger more attack vector/surface especially if I just want to run a simple LAMP stack? Sorry for the OpenBSD noob questions. I am just curious on tradeoff on the decision turn off the kernel module completely.