That's part of the problem. From the user point of view it doesn't matter if the bug is due to initramfs, or the kernel, or ZoL, or whatever else. What matters is it doesn't work. With FreeBSD development model it's easier to get it to work, since it doesn't need to go through so many separate groups of people.
I am on fedora with added zol repository and fedora 30 doesn't supply any zfs modules or initramfs scripts. I had to do my scripts to verify that the modules are included and don't break my boot process. And it worked like a charm... for a while.
That's an initramfs bug; the initramfs scripts are not actually supplied by the ZoL project. You should file a bug report against your distro's initramfs package.