I doubt this is typical of Texas legal procedure. --
Typical or not (and I submit that mass indictment of 100+ people for the same crime is not typical, anywhere), the Texas courts are agreeing with and supporting the DA. 100% of the times the complaint was challenged, the courts found that it contained probable cause specific enough to the accused. I predict that the Texas courts will find the indictment sufficient, too.
In other words, Texas courts endorse leveling of charges with less than necessary specificity, and intimidation of innocent people to cop a plea in order to extract themselves from Texas legal process.
I agree.
Did you follow the Wisconsin abuse of the John Doe prosecution of the staff of governor Walker?
It finally was ended after years of weaponization of the legal system there against political opponents.
I see similarities here.
Here is the best coverage on the mess in WI.
They did an excellent job of covering the subject from several years.
http://watchdog.org/series/wisconsins-secret-war/