This is what my current priest does except that we (EMHC, servers) are suppose to consume at the same time as Father. It makes me uncomfortable because it is undue handling of the Host, doesn’t follow the GIRM, we pray “Lord, I am not worthy to receive you . . .”
after we have received, and it is a terrible habit (not immediately consuming) to get the altar servers into. I have discussed it with Father a few times but he hasn’t relented. I think part of it is not wanting to be the “high and mighty priest” but I can’t imagine anyone is thinking that when the priest receives first separately. Besides the priest
is presiding over the Mass.

This makes me want to discuss it with Father again but I don’t want to annoy the poor guy.