That happened in 2021 and we haven't had similar issues since. I haven't experienced a power grid failure since then.
According to Google, Texas currently has about 87GW of peak capacity & a data center production pipeline that will require 75-100GW. So the state will have to basically double its peak capacity to supply power to all those new data centers.
The previous failure was in 2011, and didn't happen again until a decade later. The root cause hasn't been resolved since 2021: the demand and weather conditions simply haven't recurred since.