Understanding that the two words are one and the same -Hindutva and Hinduism.
In the word Hindutva, the term Tattva refers to principles. There are 24 such principles or tattva of the world of duality (atma-tattva), of which the pancha bhutas are also a part.
So when one condemns Hindutva, terming it as an aggressive form of Hinduism, that person really has no heads or tails of what he is speaking about. Hindutva simply means the religious & philosophical principles followed by the Hindus. Hinduism is just the English counterpart of the term Hindutva.
The term Hindutva is also not new, but has been used many times by many scholars of the 19th century (Bengali and Hindi scholars alike).
So when some “academicians” hold a conference claiming to dismantle global Hindutva, and say that they accept Hinduism but not Hindutva, then understand that it’s either that they don’t know the meaning of the term, or what is more likely is that they are playing with the word and in reality trying to attack the very basic foundations of the Hindus.
The image explains the concept very well.