Yeah, I’m not convinced that anyone applying for a residence permit prior to any changes to the Nationality Law gets voted through will be grandfathered to the 5-year nationality timeline—although some lawyers seem to think there’s a legal argument for it.
I’m slightly more hopeful that you might be grandfathered into the provision that the clock to citizenship starts ticking from the time of application, not when the residence permit is issued.
Either way, if applying now and being grandfathered is important for your plans, make sure to make an investment that can easily be liquidated if things don’t pan out the way you hope (e.g. an open-ended fund). After all, it is possible that by applying now you do get grandfathered in some way, so I can understand that some people still rush to apply—but it is far from guaranteed in my opinion.