At first glance, it looks like Butler doesn't have a serious injury, considering he was able to leave the court on his own. And as far as I know, the X-rays didn't show anything serious. So, it's probably just a pelvic contusion, but even so, Butler could miss a couple of games. That could be critical for the Warriors.
He will undergo on MRI in bay area tomorrow so maybe he will be evaluated if he's fine to go back or he need to take a rest anyways people could read this report to know more about his situation.
https://warriorswire.usatoday.com/story/sports/nba/warriors/2025/04/23/injury-update-jimmy-butler-pelvis-contusion-set-for-mri-on-thursday/83244595007/Also good Butler says he's fine so maybe he can still play in this series since Warriors really need his presence. If he missed more games then provably that this will be a big problem on Warriors and for sure that Rockets will take advantage in this situation since each game is important.
Let's be honest for them for a moment, do they really need to? I mean Butler being in the team could of course be better but do they really need him? They are looking like they are not going to win this series even if all of their players were 100% healthy, including Butler. Rockets looks like the better team in this series and I can see them winning the series, not easily but Rockets could win in 7 games.
But, let's for a moment assume that Butler is great, everyone is great, and they win this series then they are going to face Lakers vs Wolves winner, which I have zero doubt they would lose, and even if they do then another bigger threat etc etc. Long story short, they are not going to win the title this year that is impossible and for that reason I believe they shouldn't risk injuring Butler even more. Just rest him, lose out, and try to be better next season.