You raise an interesting question, 147, as those who eat Kneidlach on the last night prepare them when it’s already night. I think there are actually tshuvos written about whether / how to cook those famous (or infamous) matzo balls when Pesach comes out like that. Maybe the posters who usually chime in with their piskei Halacha, will chime in here.
As for the thornier issue of machmirim & meikilim looking at each other the wrong way, and being offended by each other’s attitudes, and worrying (or imagining) that they’re not getting enough respect from each other- that can easily be solved if we all learn not to take ourselves (or our Kneidlach) so seriously. There are so many other things to worry about, it’s a waste of time to be so busy making sure the other guy is giving us and our minhagim (or lack thereof) sufficient kavod.