This rule has held true my entire life so far, and has probably been true since the 1940s.
Although i definitely know people who are pro-Palestine and pro-Ukraine and its like uhmmmm lol
they were fake virtue signallers who were using palestine as a rhetorical shield to make them seem “good” and supporting “underdogs” since that’s a Liberal virtue. As soon as Palestine does anything though, that fake support evaporates. A lot of it was probably libs trying to own the online tankies by saying “see Ukraine is just like Palestine!”