They met with him befor ehte funeral and specifically asked the priest to focus on how he lived and not how he died (which was by suicide).
The very least the church could have done is sent the priest to a monastery, and required him to take additional training . In the pre Vatican II, priests were not supposed to perform funerals for people that had committed suicide, lived in sin, or had been ex-communicated. Priests and all ministers know that the funeral is not about saving the dead, but comforting the living, this priest failed at that and being a human.
 glennlab
                                                
                                                Level 10
                                                July 14, 2021
                                            
                                                
                                                    glennlab
                                                
                                                Level 10
                                                July 14, 2021                                            
                                        I think Catholics believe the funeral is about purifying the soul for presentation to God. Like an offering. If the soul didn't live in according to Catholicism's dogma then it can't be purified. Sad but that's life.
@rainmanjr The catholic church doctrine prohibits providing any sacrements to those that have died in mortal sin. Suicide is considered a mortal sin so bad that they offically prohibit allowing the funeral service to be held in the church, or the body to be buried in a catholic cemetary. Local Bishops may grant exceptions.
I have had to officiate at catholic funerals because the local priest would not do it or the family was afraid of a similar diatribe from the priest.