In india most people are not secular because they believe in some ideology or the other but because we are constitutionally secular , india has progressed.
BJP was much more hardliner in 90's than it is now and will be even less tomorrow ,you just have to view it as a normal political party rather than viewing with a anti-bjp mindset.
First, the positives. There is some truth in what you say, that people are not secular because of some ideology, they are secular because the constitution says so. But not, sadly, much truth, for two reasons. Did you not know, O wise one, that the secularism clause entered the Constitution through an amendment in 1976? Is it your contention that the Indian people were not secular until then? Secondly, the secularism that we have is not secularism at all. Secularism is the removal of all religion from public life. Our secularism, by contrast, seeks to appease religions, and religious leaders by allowing equality of all religions in public life. A subtle difference but a damaging one. As a direct result, in practice, especially in Congress practice, the effect of secularism has been to repress the nationalist aspects of secularism, and play up the minority appeasement. There are thousands of examples of this.
So what is the point? The point is that you are mistaken in citing secularism being present in India only due to its constitutional sanction. The point is that it cannot be part of India and of Indian public life until it is part of any ideology, and that ideology is inculcated in the citizenry. Merely leaving it in the Constitution is worth nothing.
So, leading from that, the pious sanctimony of the BJP constitution means less than nothing. It is not even an aspect that any BJP leader needs to feel the need for, it is a very quotable aspect, which can be drawn out and flourished as a matter of policy and propaganda, without in any way affecting the daily day-to-day horrors that they inflict on those whom they see as beyond the pale.
Your argument about the BJP softening down is endearing but entirely mistaken. It is like arguing that a sadist and torturing monster is now reformed because he cuts off a finger, where earlier he would cut off the whole hand. Not much of an improvement, except to those hopefully looking for signs of humanity that they can display to their sceptical proximity.
I am happy to know that you know about the hostility of Golwalkar and the RSS to the constitution.
I am sad that you have not worked out yet that this hostility has gone nowhere, but lives on. Even a slight familiarity with the views and voiced opinions of the BJP leadership would show you the innate bigotry which still runs in their veins.
BTW gowalkar &RSS disowned we the people.