Indeed. He has been badly smeared even by most Traditional Catholics, but he was fighting the Vatican II fight well before Vatican II materialized. He knew where it was all going, and was almost alone in the entire world to realize it. Everybody else is operating on 20-20 hindsight. Everybody else in the 1950s believed that things were going just great in the Church since the seminaries and religious orders were full and conversions were happening at a record pace. But Father saw the rot underneath the veneer and sensed that "something was wrong". After pondering the question he realized that the root cause was the denial of EENS dogma (and the resulting false ecclesiology) ... and as it turns out that was the core error behind all the errors of Vatican II. Rahner bragged about how by far the most revolutionary thing about Vatican II was its overturning of traditional EENS dogma and marveled that none of the "conservatives" even noticed it.
Recall that his punishment resulted from Bobby Kennedy taking offence, running to his Dad Joe who get got the Kennedy house bishop, Cardinal Cushing to organise measures in Rome.
Cushing got complaints from various people including a mother (1961) and a priest (Fr Chabot 1967) about Paul Shanley's crimes against young boys throughout the sixties. His response at the end of the sixties was to make Shanley's apostolate to street youth permanent. Error and moral depravity are so often the closest things. I recall someone claiming that the perverted, tormented Shanley made claims against Cushing.