Texas Democrats release 2020 autopsy

[Alcibiades]

George W. Bush did WAY better in the RGV and with Hispanics as a whole, but sure, just because Trump overperformed with them in one election, clearly that’s proof that they will be a reliably Republican voting bloc in the coming years and anyone who needs more evidence to come to that conclusion is just “in denial.”

W did do better than Trump with Hispanics overall, but he did not do better in the RGV, and that’s despite having one of the biggest home state boosts of any recent presidential candidate.

[Alcibiades]

George W. Bush did WAY better in the RGV and with Hispanics as a whole, but sure, just because Trump overperformed with them in one election, clearly that’s proof that they will be a reliably Republican voting bloc in the coming years and anyone who needs more evidence to come to that conclusion is just “in denial.”

W did do better than Trump with Hispanics overall, but he did not do better in the RGV, and that’s despite having one of the biggest home state boosts of any recent presidential candidate.

Bush did much better in the Urban RGV than Trump did, so he won them by more even if he didn't get those insane rural swings he did perform much better because those counties have almost no people.

Like Bush Lost the RGV, 45-54 in 2004, Trump lost it 41-57 in 2020 compared to  29-68 in 2020.

https://en.wikipedia.org/wiki/Rio_Grande_Valley#Politics

I think, if you look at the map in the Wikipedia article, these results are only referring to the southernmost tip of Texas (i.e. the strict geographic Valley), not the broader Hispanic region that politically forms the RGV. Bush did better by that definition, because, as you say, it contains the main urban centres, but if you expand it to all of Hispanic South Texas, I reckon Trump still did better.