He He He. Shows how shallow your knowledge is.
Tagore did not write Vande Mataram. It was written by another bengali Bankim Chandra Chatterjee. Tagore wrote our National Anthem Jana Gana Mana
However that does not prove that Bengalis are Hindutva Followers. The exact opposite is the case
Bengal is one state where BJP has never been in power - Ever
It was ruled by leftists for decades and now ruled by Mamta Bannerjee. Both are as opposed the BJP and Hindutva as possible
If Bengalis were pro Hindutva at some point of time BJP would have formed the govt or atleast won a good no of seats.
In 2016 elections to state assembly BJP won a grand total of 3 seats out of 295. This was the
best performance of BJP ever. Its previous avatar Bharatiya Jana Sangh had won 9 seats at its best performance.
http://www.oneindia.com/kolkata/bjp-wins-highest-tally-in-bengal-since-bjs-in-1952-2103277.html
Bengalis consider themselves as "Intellectuals" and Liberals. They are total opposite of Hindutva
So what is happening is Hindutva Revivalism not Bengali Revivalism