So to respond to that, yes it is. I mean just translate it. The yidden/ Moshe had times they davened nicely, they knew how to say please, as in Kel na refa na la… He was not a polite, “if it’s OK with you Hashem, we would love to have the zechus to bring the korban pesach…” Rather it was “lama nigara,” “Why should we miss out??”
Moshe davenend קל נא רפא נא לה not klal yisrael
The prop the couldn’t bring the קרבן פסח were asking “why should we lose out on bringing the קרבן פסח if we were doing a מצוה and שכר מצוה מצוה and מצוה גוררת מצוה