People shunned Paladin during week 1 of the tier because bringing it actively made clearing fights more difficult. Paladin's lower DPS output had to be made up somewhere else in the party, putting additional pressure on the entire party for literally no benefit.
You can blame the devs for that, as it's a direct consequence of the way the game is designed. Utility is so homogenized in this game, and encounter design very rarely leaves any room for innovative tactics that would create non-dps centric metas. With all of the tanks having an extremely similar toolkit, the amount of DPS they bring to the table is naturally the only thing that really matters.
There are a lot of people that raid in the first few weeks who aren't aiming for world first, and this issue would still affect them heavily. These balance issues are actually most punishing for players of lesser skill, as it takes significant amounts of optimization to meet what is considered the "minimum" contribution from a tank on P4S as PLD. There is no reason to accept a balance margin this bad.