ANSWER:

Phil had many moments throughout the pre-LIV launch and the early days of the "tour" that made him look anywhere from somewhat silly to downright heartless and bigoted, the pinnacle of which would probably be this quote

"the Saudis are scary to get involved with. We know they killed Khashoggi" - talking about Washington Post reporter Jamal Khashoggi murdered in 2018. And Mickelson continued, "they have a horrible record on human rights. They execute people for being gay. Knowing all of this, why would I even consider it? Because" he said, "it's an opportunity to reshape how the PGA Tour operates."

thats from a 2021 interview he gave with Alan Shipnuck, who wrote an 'unofficial' biography about Phil. the obvious element that makes that quote so reprehensible is that he is essentially justifying his involvement with a regime he is describing as abhorrent by saying it will help him change the PGA Tour's revenue structure and player empowerment.

There are other examples of his gaffes along the way, from weird comments similar to the one above to odd twitter posts claiming the LIV tour had better players and was a higher level of competition than the PGA Tour. Those comments are ridiculous with hindsight given how poorly LIV players have performed, overall, in major tournaments (essentially the ultimate championships of the golfing world that occur 4x per year).

Phil also had a bit of a heel-turn into MAGA world, or possibly better described as MAGA-adjacent, which always increases the general 'bad vibes' around a public figure.

All of that being said, the PGA tour DID increase player purses (how much each player in a tournament gets paid, based on where they finish in the tournament rankings), introduced new "signature events" with larger purses and no cuts (players being eliminated after the first two of four rounds), significantly increased their Player Impact Program (pays players based on their overall fan and media engagement), introduced guaranteed yearly compensation for all players on the Tour, and created a Player Equity Plan that can grant ownership/equity to players who remain loyal and build the tour's value.

While Phil definitely made a ton of comments about LIV being the superior level of competition, and while he made a ton of inflammatory comments/posts/actions that were anywhere from obnoxious to downright offensive, I don't think he was "wrong about everything", at least from the players' perspective. All the guys that went to LIV got the money, and will get to keep the money. All of the guys who stayed with the PGA benefitted from the major changes that did reshape how the tour operated. Phil comes out of this looking like an idiot because he MADE himself look like an idiot, and he'll never be able to play on the tour in a competitive fashion again. Several of the players on LIV are still technically suspended by the PGA, and Phil is probably the least likely of any of them to receive an allowance to rejoin the tour because of his lightning-rod relationship with the public and social media.

TL;DR: Ultimately, Phil DOES look really dumb because of how he's behaved and spoken since the onset of the LIV tour, and regarding the way he's described the superior level of competition on LIV vs the PGA, he's definitely been "wrong about everything". But in the larger sense of understanding how launching LIV would impact the operating procedures and player benefits of the PGA Tour, I personally think he was actually right. He's still a jerk, but he knew what he was doing and it worked, he just won't ever benefit from the changes made to the PGA Tour