I am curious how you know that there are “DEFINITELY victims who have used the confessional to talk about having been abused, and the priest has used the seal of the confessional as an excuse for not doing anything about it.”
That is one heck of an assumption. Unless you were a victim and the priest explicitly told you, “oh based on the seal of the confession, I have an excuse not to do anything about this”, you cannot ‘definitely know’ either that there were victims who used the confessional to talk about having been abused (this may have happened but you cannot definitely know it) And you most assuredly cannot ‘definitely know That any priest, anywhere, ‘used the seal of the confessional as an excuse —an EXCUSE! How judgmental can you get=-for ‘not doing anything about it.’
With that type of attitude it seems that you have already ‘definitely known’ what you think of the seal of confession and of priests.
It is fine to stand up for victims and to express anger at abusers. But it is not fine to use a good cause and tweak it subtly to cast aspersions on priests and imply that they use ‘the seal of the confessional’ as an excuse to let abuse keep happening and not ‘doing anything about it.