The ICEL was independent, funded by royalties on its texts, which were required to be bought by every English-speaking parish and congregation. Rather than being under the direct supervision of the bishops’ conferences, it was communicated to by the bishops in the conferences’ liturgical commissions, in the USA for example Bishop Donald Trautman of Erie, PA. The complaints of various members of the USCCB are still available on-line, and they are plentiful.

Texts were given for approval on a “take or leave it” basis.

Yes, the infamous Frederick McManus was one of the culprits.

Under the guise of “dynamic equivalence” it changed the meaning of the Latin original in multiple places, deleted words, and devised entirely new compositions that did not exist in the Latin.

If you want to go toe-to-toe pick a text and we’ll parse it.

The liturgists like Trautman and the ICEl became so defiant they were finally quashed, with Trautman squawking to the bitter end.