It's called obedience to your Ordinary, Father...
Imagine if all the priests did this in all the parishes? He can express what the messages of the reading are in the homily. I have been to some Masses where a priest will insert a thought in the prescribed prayers..usually is not much, but a sort of an alert if you will, or now and then an instruction about that part of the Mass but this has been rare.
Sounds like this 72 year old prelate has other problems as well..Lord help us if we find out more “dirt” on this guy.