Indeed. Trent was addressing people who had been baptized in the Catholic Church. They were formal heretics. The majority of evangelicals are not. Furthermore, even Trent was concerned about the leaders of the Reformation rather than their followers, many of whom were compelled by the laws of their states to adjure their faith. Different time, different place.
From the Dictionary:
ANATHEMA:
Somebody or something formally denounced: somebody or something cursed, denounced, or excommunicated by a religious authority
So Martin Luther and John Calvin are still under Roman Catholic condemnation but not their followers?
You can believe what Luther and Calvin believed but not be anathema?