I have been through 3 10-day Goenka retreats, numerous 3-day retreats, and is engaged in daily practice (minimum 1hr/day).

Vipassana meditation have brought positive change to my life. That's why it makes perfect sense to me that it will have some adverse side-effects for some people.

It works i.e. it has positive effects - therefore it must have some negative effects, at least for some people. That's how many things behave in the world, right? In physics its called "action and re-action".