Even worse, if one of the partners in a marriage was baptised by this priest, and the marriage was performed by the Catholic church, they may need to get re-married.
“The error also means that because baptism is the first of the sacraments, some people will need to repeat other sacraments, according to the diocese webpage for frequently asked questions.”
“According to the United States Conference of Catholic Bishops, there are seven sacraments in the Catholic church: baptism, confirmation, Eucharist, reconciliation, anointing the sick, marriage and holy orders.”
https://www.cnn.com/2022/02/14/us/pastor-invalid-baptisms-re...