I go to daily Mass and and yes I do wear jeans at times because I wear them at my job. When I am dressed up for work then that is what I will wear to Mass. For Sunday Mass I do dress up for God regardless. The difference for me is that I will not put more importance in my dress for work and than I do for God.
I do see the majority of people wearing jeans for Mass and I trust that God knows thier hearts and their financial situation so I will not worry about it.
I agree with the Priest for saying what he did, there appears to be a very casual attitude for a very supernatural event. How would people dress if they knew they had a face to face meeting with Jesus? That’s what we have in the Mass a face to face meeting and more.