It was a joke. The weapon used by Israel is secret. Jewish space lasers is a reference to an idiotic tweet by Marjorie Taylor Greene that suggested that the 2018 California wildfires were started by some global conspiracy group with an "energy-based" space weapon. The user you replied to is saying they're going to be upset if it turns out Israel actually does have space lasers.
I'd suggest looking at some building tips videos on Youtube. Builds look tons better when you align things properly, and there are some handy tools in Satisfactory like grid snapping and nudging that can help with getting everything just right.
That got me when Trump said he wondered why Biden never cancelled Musk's contracts. Like, my guy... I know you have dementia or whatever, but you do know you gave the man the keys to the US government like five minutes ago, right?
Needs more jeans