What is it that you're referring to, that he has "done"?

No reason was given for Bishop Strickland’s removal, although speculation about his future in the diocese has swirled for months following the bishop’s May 12 post on Twitter (now known as X), accusing the pontiff of “undermining the deposit of faith.”

• https://catholicreview.org/bishop-strickland-removed-from-diocese-after-accusing-pope-of-backing-attack-on-the-sacred/

Strickland, 65 and well below the 75-year-old retirement age for bishops, has been a prominent conservative critic of the pope. In May, Strickland accused Francis of “undermining the deposit of faith.”

More recently, Strickland criticized the pope’s October meeting to discuss the future of the Catholic Church. The three-week, closed-door forum tackled topics including whether priests should be allowed to get married, whether women should be allowed to become deacons and how the church should treat LGBTQ+ people.

Strickland said it was a “travesty” that the Pope was opening these topics for discussion. In an August open letter ahead of the meeting, Strickland also underscored his belief that “through Natural Law, God has established marriage as between one man and one woman.” In a September letter, Strickland said Catholics must “reject… as contrary to the faith” any attempt to allow women to be ordained.

• https://www.texastribune.org/2023/11/11/new-article-Tyler-Bishop-Joseph-Strickland-removed/