Given how luxurious was the food that was eaten by the priests I was with, some some exception, there is an odour of truth in this statement.
Anytime I hear the statement "we are the church" in relation especially to the neosspx, the song by US artists "We are the world" - self indulgent crapulence - done for Africa aid, comes to mind.
I don't know about other people, but the fastest way for a priest to lose my respect (not that they care about it) is to show a taste for luxury. It is simply ridiculous.