It seems like you’re being argumentative or defensive. In general, it’s not a crime to not report a murder, right? Instead of acknowledging that it’s largely legal throughout the US and most other western or English-speaking countries, you started focusing on a special case (Texas, which is only a partial exception: the duty to report is only if you observe it, not otherwise, and also has some other limitations).
That’s not what you said earlier though. Those are different scenarios than failure to report.