If a custom rom can’t support it, that’s more about the custom rom than Samsung here. They will almost certainly open source the kernel driver part, and any user library could be copied from the stock rom if absolutely necessary. If a rom developer doesn’t want to do that, well that can’t be reasonably pinned on Samsung.
Not gonna lie, I’m impressed that some region-specific company in India figured it was worth their time and effort to try posting an advertisement on Lemmy.