Seems like this was a problem with last mile delivery, which isn't a uniquely Texas problem. Oregon and California have had plenty of major outages due to wind and cold snaps in the last few years as well.
Portland too had that major cold snap where power was out due to last mile transmission problems. I know at least one city in the metro area that sped up their plans to bury their power transmission because during that storm large parts of that city were without power for days.