HP moving to Texas is the corporate version of my grandparents retiring to Florida.
Complaining about dev teams moving to texas is like complaining about goods being manufactured in China. It's a net positive for the whole world, plus competition will improve the Vally and SF just as much as it improves individual companies and products.
As to the latter criterion: consider the symbolism of Aricebo collapsing in an uncontrolled fashion on the same day a Chinese spacecraft departed te moon (and a Japanese one prepared to deliver its second sample of an extraterrestrial sample). When the Bush administration restricted stem cell research, China and Singapore picked up the slack. Etc.
In this case exporting technical work to states like Texas not only may open up opportunities for more people to do technical work but can help them as oil related revenues decline.
The world is not zero sum and to me exporting a job to China, India, Romania or Texas as are equivalently positive.
He’ll do you object to Apple building a chip development team in San Diego?
Though, I personally don't think these companies moving to Texas matters that much, but if there was a mass migration it could certainly shake things up in ways that some may appreciate and some dislike.
Oracle, HPE, and (not moving, but might as well add) IBM have long made their money with legal and financial shenanigans anyways, they are exactly what we should call zombie companies.
It's a much different type of employee than you'd have at somewhere like Netflix or Google, though.
Plus his rockets are there, so that's a perk.