I shouldn’t say Israelis say that they took all of the land peacefully; the academics and most of the country admit to their barbarism, in places like deir yassin. It’s only the far-right who engage in historic revisionism and try to hide any and all wrongdoing by the settlers and early israeli army.
It’s a shame that frum people buy into this garbage. It’s no different than the far-right in america who deny america’s barbarism towards native americans (to be fair, the native americans were even more barbaric, but two wrongs don’t make a right), or the far-right in europe which wish to erase blame for the holocaust, or in Japan where they try to hide their oppression of the chinese and manchurians before and during WW2.