Expect that such assertion has been made in some kind of specific knowledge to which we civilians are not privy. If it is not then restraint would have been a better option, for this only debases their standing amongst serious thinkers.
If it is indeed serious then they ought to summarily withdraw support to UPA immediately before any further long term damage to hard won freedom takes place.
In all probability all that will happen is that the statements of this respected person will be taken hereafter with a pinch of salt. This erosion would not be a gain to BJP or any other party, this degradation of credibility would be loss to the institution of our democracy.
We may not agree with the policy nor the ideology, but most of us would surely like to have politicians who can be respected and taken at face value. Democracy is better served that way.