Shreyas,
I think you should be more discriminating in who you listen to for advice. Or, just be a little more skeptical. Ask yourself: How does the introduction of HANA actually reduce or eliminate the types of SAP problems that functional analysts are hired to solve?
If anything, there may arise yet another category of functional consultants, whose specialities are more closely related to HANA-specific solutions; we will see. However, I doubt that SAP software will magically become so intuitive; so user-friendly, and so easy to install; that functional consultants will be any less in demand.
Best Regards,
DB49