I believe the runway for that is running out, for a couple of reasons. But I want to preface this with something, while rural Texas will remain Ruby Red no matter for the time being, but suburban voters - in particular suburban women, are needed to keep the party in control of statewide offices - without them, the math doesn't work.
Republicans continuing focus on restricting abortion rights - while Texans are culturally on the conservative side, the outright ban, followed by continuing inflexibility (more like unwavering support to the hard right evangelical base) on the issue, is damaging the party in the suburban areas it must carry to carry statewide office.
The Paxton impeachment trial fundamentally exposed the good ol' boy network in Austin - laid it bare to voters across the state. While this network pre-dates RPT control of the lege - I believe on some level it deprives the Republican Party of whatever moral authority it could (and did) claim - also, no matter how the Senate voted, if you watched the trial in depth, Paxton came off with at least a whiff of corruption about him - I believe this also damages the party among suburban voters.
Trump is another factor, and he's generally repellant to college educated suburban voters, particularly college educated suburban voters - also Trump on the ballot (and there is basically zero change he will not be) will juice Democratic turnout.
The final nail in the coffin is demographic change - this one to me is not quite as clear as some pundits think - but the youth are generally more liberal socially than their parents are - and further left economically no matter their social alignment - this also bodes to a sea change coming - and is part of what is driving the political realignment we're seeing - I just dont know the particulars yet, or how its going to shake out - but the realignment that is coming is on the scale of what happened when FDR or Reagan appeared on the scene - an upending of what came before. This event won't really finish until Trump dies - he's the only glue holding together a really.. unstable coalition of voters, until then, we wait.
In the end, I want to implore all Texans to vote and participate in politics, run for office, vote like your life depended on it, implore those around you to vote - not just at the general, but in the primaries too - the politics in the state are shit because not enough voters pick the candidates - which leads to shitty candidates, and then not enough people show up to vote in the general, which leads to those shitty candidates making it into office.
Texas is a great place, culturally, in my humble opinion, one of the greatest and most vibrant in the nation. We can make this a better place - change the status quo - no, better doesn't mean some 'progressive' paradise - but it need not be like this, we can have better and frankly we deserve better from our state government than this.