I don't have any sctp testbed, but since this popped up with an OS upgrade, likely there are some changes in the sctp lib api/behaviour that require the module to be enhanced to follow them.
For whoever is going to work on this enhancement, here are some useful comments made by @fredposner on matrix chat when discussing this:
``` centos 8 made a lot of changes... I know there's a different method in which the OS itself handles SCTP.
> Blacklisting SCTP module by default in RHEL 8
To increase security, a set of kernel modules have been moved to the kernel-modules-extra package. These are not installed by default. As a consequence, non-root users cannot load these components as they are blacklisted by default. To use one of these kernel modules, the system administrator must install kernel-modules-extra and explicitly remove the module blacklist. As a result, non-root users will be able to load the software component automatically. ```