FF12 had some bullshit chest near the beginning of the game… If you opened it you lost the ability to 100% the game and get the Zodiac spear ( reportedly some ability to get one in a very tedious grunts fashion but it’s been ages)
Basically the straw that broke the camel’s back for me with ff… The games story and combat was already a let down after they dropped the turn based combat like all of them ff1-ff10
But yeah generally I dislike many soft lock mechanics or illogical things that punish you for just playing the game… Oftentimes these were put in games just to sell strategy guides.