After Santa Fe in 2018 (almost four years to the week), Governor Abbott commissioned a report to give recommendations to the State Legislature of things that could be done to help prevent incidences such as these.
That report, which included the introduction of a red flag law, which is a pretty basic mental health measure, went untouched for the most part. And since then, as mentioned previously, the state has actually gone further in deregulating firearms.
Until I see action on something as simple as a red flag law, it's hard to take any of the calls about "mental health" seriously... instead of the fact that they obviously are a way to kill media newscycle time so nothing changes.