I will preface these remarks by saying I DO NOT believe that the Mass in the Ordinary form is in any way deficient.
That said, one cannot attend the Extra Ordinary form, properly done, and not realize that things which should not have been left behind were, in fact, left behind.
Did the change of the Mass Rite lead to the current situation in Holy Mother Church? I do not think so.
Were there issues pre-Vatican II? Yes, obviously. See Here:
http://www.newadvent.org/cathen/11764a.htm
But, and there is always a but, It can be said that the loss of The EF Mass was part and parcel of numerous problems that began after Vatican II that helped exacerbate the mess we see today.
For a good read into where we are now, try this:
Scholars trace the origins of today’s doctrinal and moral confusion to the philosophical error of Modernism which asserts that truth can ‘change and evolve.’ Theologians, historians
edwardpentin.co.uk
I believe either form of the Mass, done properly, with adherence to the rubrics, can and does evoke the reverence and focus on God and Christ that we should have. It should not be an Either/Or situation. That, I think, Was what Pope E. Benedict XVI intended with S.P.