Jansenism's view of grace of and predestination is heretical, and practically indistinguishable from Calvinism.
What is often called "Jansenism" today has nothing to do with Jansenism, but with the stricter moral practices of the pre-Conciliar Church.
That sort of moral rigorism may have led a few people to scrupulosity, but when you consider the spiritual health of the Church then to that of the post-Conciliar Church, that so-called scrupulosity looks much healthier than what we have now.
That so-called scrupulosity so bedeviled Martin Luther that he left the Church.
Scrupulosity and Indifferentism seem to me to be opposite sides of the same coin - both lose sight that Jesus Christ is the center and He is merciful and forgiving if we are truly repentent.