I see the point you make.
But I still have a hard time with SCOTUS. It seems to me that TX is making the claim that one (or more) states cheated in the election, and because of this cheating (in PA, MI, wherever), the residents of TX (and 49 other states) are going to be stuck with Joe Biden as president. Texas says it is being harmed by the fraudulent actions that were allowed to take place in another state. To me, this seems like a legitimate claim of one state against another.
The states, rightly, have very limited grounds on which to sue each other.
Imagine if CA could sue TX because Texas' voter ID laws were too strict.
Or because their gun purchase laws were too lax and some guns bought in Texas were used in a crime in CA.
SCOTUS wouldn't have time for anything other than interstate lawsuits and it would destroy the entire basis of federalism.
This goes to the REAL issue that should be at the forefront of this discussion: Why the hell did those state legislatures allow this to happen, and why aren't THEY the ones contesting the elections?