This is still wrong.
A two-party system will always revert to a mean around 50/50. Both parties are essentially trying to go just enough to the center to win, but not anymore than that.
So logically - a mathematical swing with Texas (and Georgia) allows the Democrats to move to the left politically and still be in contention for the Presidency. Simultaneously, it will force the Republicans to move slightly more towards the center to make other states competitive. Or create an entirely new dynamic.
The last time we heard this logic was in the early 2010's. Republicans would never survive the demographic shift etc. And guess what happened then.
Got a lot of smoke on this take a few weeks back, but it turned out to be true.
It all boils down to getting the Strait opened. Nothing else really matters