I don't think so. Govt of India has been promoting Sanskrit (without much success) since many decades. There is/was even Sanskrit news. Now-a-days I can see "Weekly Sanskrit Magazine: Vaartavali" from national news Doordarshan [1]
Yep. National news was broadcast all over the country in Sanskrit language daily on Radio. Weekly on TV I think
There are local radio stations broadcasting Sanskrit news for the past few decades at least
Modi seems to have given it more attention than before. And it does dovetail with his nationalist bent. It's a lot easier for practical and symbolic reasons to drive nationalism when everyone speaks the same language. A bit like how Israel adopted Hebrew.