Nah. This is some midwit Reddit bs that keeps getting repeated.

First off, this was ruled by the Appeals Court of DC, not SCOTUS. Not a national law ruling, and debatable if it's relevant at all in Texas.

Warren v DC's ruling is that the police have a duty to the public at large, and not to a specific individual at a specific time. The cops, even if well funded, can't be everywhere, all the time, and stuff will slip through. That is, if there are 20 cops on duty and 40 crimes happening by definition someone won't get get served; they can only be in so many places at once, and you're not able to sue because of that.

Same way you're not able to sue the Ambulance if the only free one is on the other side of town and grandpa died of a heart attack before the arrive.

Warren v DC is also a civil liability thing, while the former Police Chief is looking at Criminal Negligence. He can certainly try and appeal the ruling if he is found guilty, but Warren v DC won't have shit to do with that.

The entire incident is well documented through recorded 911 and response calls and tons of witness testimony. He's gonna eat shit, for sure. IMO it's not if he'll catch guilty, but how tough the sentence will be.