Patan
I see your point, but I see these things differently. Raja, Maharani are titles given to ones relatives in those families. Almost like saying Bittu raja to your kid; well, almost. These relationships status are lifelong and thus they will always call them by those titles. Jwai rajaa, nanda maharani etc. We might not agree with these titles as we no longer have raja and maharani; but they weren't assigned those titles because they were actually raja or maharani. Makes sense?

Sarkar was used to the Royal family when they were the Royal family. They are now a commoner.

I don't blame you if you don't see the difference though.