That's a stupid argument. If you think about it, out of the ENTIRE globe, at this time in human history, India is the ONLY country who's changing their text books and everything else to grow "Hindutva", the kids are being taught the Hindu supremacy all the way, your government has openly said many, many times over that by 2030 they want a 100% Hindu nation. And you'll conveniently open up threads towards Pakistan??
How about we open up a thread on India, Hindu extremists and their killings of Christians and Muslims and forceful conversions??? That's ALSO extremism, no different than terrorist from Islam or Christianity who don't like others to believe in anything else.
Now that it's clear that no extremist's shiit smells better, whether Hindu, Muslim or anyone else trying to conduct terrorism to kill or convert others by force to a different religion, let me get to the topic. There are two things here. Pakistan's military fueled militia culture a few decades ago, and that turned the society into an intolerant mess (that India's starting to go through now with Hindutva loving extremists). The second part of this equation is the foreign support of terrorism into Pakistan through Indian agencies. There is 0% doubt about it. Whether one event is connected or not, everyone knows how BLA terrorists are connected to India and who trains them in Afghanistan, who's now providing financial support and money to the barbaric Taliban to really damage Pakistan through terrorism.
At this point in life, both Pakistan and India have to work hard to control their extremist fractions. The extremist Hindu want the world to be one Hindu nation, and the crazy Islamist want the entire Pakistan and the region to be a Muslim nation following their version of whatever they believe in. All extremists should be banned no matter what religion they come from or belong to, period.