Ubiq, you’re going back to the knee jerk “no issur no problem” thing. It’s what high school kids say when their rebbeim tell them that following sports isn’t assur. Time to move on.
The shvuos are more than just “advice” or even the best advice; they’re the ratzon Hashem, expressed through chazal. What the zionists did was contrary to the ratzon Hashem according to everyone.
Again, Hashem warned us what would happen if we did it; that’s not just “advice”
And that’s only rav Belsky’s shitah. Most other gedolim I’ve spoken with do not agree with it, as hakatan is accurately quoting. They give other reasons why it’s not in the major poskim; the satmar rov says that it’s because they’re not separate halachos, but all part pf kefirah in bias hamoshiach. The same way the rambam etc do not codify every heicha timtza where one can violate an issur, they don’t mention this example very often. But they do mention it in their general writings and exhort people to follow them, so they clearly do not think it’s “just medrash” or whatever.