>>36125502Articuno and Moltres were used a lot as stall or bulky mons for 2-3 gens. Was Gen 7 your first pair of games?
Even the legendary beasts would have opted for Pressure over type absorbing abilities because of the CM sets and event move compatibility, except maybe Entei that would have lost Extreme Speed however. Regular Kyurem with fast bulky subs was massive in permarain and permahail, Mewtwo had the Taunt Recover set.
Speaking of mons that should have had Pressure Regis come to mind, at least Registeel for sure would have better use.
Also Pressure makes the legendary capture harder when you try to weaken them and waste PPs.