I see your points but wouldn't you think a guy who barely won last time would have done otherwise? I know he's on the right side but WTF was he thinking? Right, wrong or indifferent, politics is all about perception. He did 'fess up and say he shouldn't have skedaddled. I'll bet this will come back to bite him in the ass the next election.
Well, the race was close - Cruz won by 200K+ votes, 50.9 to 48.3%.
But.
It was the urban counties - Harris (Houston), Dallas, Travis (Austin), Bexar (San Antonio), Tarrant (Ft Worth), and El Paso - which really turned out the vote for the Irish Mexican; and of course the border counties. There are 254 counties in this state, the Irish Mexican won 32 of them. In the counties Cruz won, earning 80-95% of the vote was pretty common.
There was a massive D wave riding on a lot of out-of-state D money for that election cycle. It unseated a lot of entrenched republican offices which haven't been democrat since I moved here in 1991. And yet with all that, Cruz still won.
Fort Bend county (pop 750K), where I live, Tom DeLay's home, the reddest of all red counties in the United States back then, flipped blue in 2016.
We have got to stop concerning ourselves with what looks bad. To the useful idiots, asserting that people should be able to keep more of their money, or that they should be able to own any gun they want and as many as they want, "looks bad."
Lots of Asians have moved here in the last 20 years. So many have moved here, in fact, Houston is now the most ethnically/nationality-diverse city in the country. The Asians mostly seem to think they can vote for a better sort of turd than the elected turds who made their former countries such stinking shit holes that they left for here.
I say all of that to get folks to understand why Cruz "eked out" a victory over the Irish Mexican. From my POV, Cruz crushed him. It is the people moving here (from India, Pakistan, China, Indonesia, and Central America) who've changed things. The democrats understand well that politics is downstream of culture. It's why they so gleefully support the immigration of people who do not share our cultural heritage.