Texas still swung and trended Democratic in spite of the massive shifts in the RGV.
Let's be honest. From a numerical standpoint, losing Zapata but flipping Tarrant, Williamson and Hays is a really good trade for Democrats. The more serious problem for them is that the overall margin in Harris didn't really budge.
With that in mind, it was numerically worse that Miami-Dade shifted.
However I still say it's worse that the RGV shifted. These are small city and ruralish people and they just keep shifting away from Democrats. Trump won new voters. It's far more painful to see new voters, many who never voted before at all, come up to the ballot and vote Trump AFTER his terrible tenure in office. Democrats cannot win outside cities it seems. As for Cubans, they were just coming home because of something something Venezuela.