I would like for you to be right and eventually your prediction will be realized but not yet. Texas is heavily gerrymandered. You said it yourself.
There is an interactive tool on 538's website that gives us insight into how much harm gerrymandering does to our democratic processes. This is Texas's current district map for the state's legislature:
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With this map, Republicans are safe and they will be in control when the next map is drawn.
Still though, if you access this tool on 538 (
link provided here), you'll see that any rational, nonpartisan drawing of district maps still results in Texas staying red. It's a conservative state and while things are changing, not yet.
Being realistic is not the same as pessimistic. What I want is for the elections to be run fairly and that every eligible voter have an easy route for casting their ballot. Let the voice of the majority be heard. After that, if their decision is in opposition to mine, I'm ok with it.