The trouble is that the chanting actually helps to suspend one's critical faculties, so it is very hard to really look at the evidence unless you stop chanting. $GI has very clever techniques to make sure it's members keep chanting 'no matter what' - which means they are prevented from thinking critically.
There is no question, it is a hard FACT, that SGI in fact uses their "SGI-Chanting" as a technique of thought-control of their members.
Its used as a thought-stopping technique, and not in a good way.
SGI has very carefully planned out a comprehensive system, that when people start to think critically, or doubt the SGI propaganda, to BLOCK those thoughts out with obsessive chanting.
Some vulnerable people get sucked into this, and start SGI-chanting all the time.
Some people are a bit obsessive, and start doing it under their breath constantly, any time they have some anxiety or any issue in life.
They are taught to believe by the SGI manipulators, that this type of Magical Thinking will solve their problems.
It makes your problems worse, as instead of doing something about them, you avoid it, and just do SGI chanting.
There is no question SGI uses SGI-chanting as a thought-reform mind-weapon to control the SGI followers.
Does this mean "all" chanting is bad? No of course not, various religions have done chanting for eons.
But one needs to apply critical thinking to it, and figure out what it is, and isn't.
All the Magical Thinking stuff...
It could be that chanting makes people feel ok short-term, as its just controlled deep breathing. Maybe that is all there is to it?
But what is the harm in quitting chanting for 6 months, just to see?
There is no harm in that.
But SGI tries to scare people and make them more superstitious and paranoid and afraid.