Its always been vunerable while building, they nerfed the armor of it while its emerging from 3 to 1. Lot of complaints even in ZvZ that lings or workers can surround it pretty quick and still weren’t able to kill it. Queen transfuse was hardly nerfed, it just takes a little longer for the full heal.
WP has been unchanged for like years…its just whine because Protoss has a viable meta against zergs…and dont have to play super perfect and defensive all game like back in the abyssal reef days (ling bane hydra against adepts, storm, forcefields etc.) (think swarms of ling bane, creep spread like crazy, bases and little protoss army like just, aww, help! get away from me, with FF’s, plyon overcharge, storm and cannons and good building placements) Or even after that when hydras got buffed and PvZ was like 60% in favor of zerg for like half a year.