Was slavery really a "Major" cause of the Texas revolution?

More or less, yes.

So let me get this straight-

I think we all agree that the BIG MAIN MAJOR cause of the states seceding from the Union in 1860/61 was Slavery with perhaps some secondary side issues.

And that the six other Mexican states that seceded in 1836- their BIG MAIN MAJOR cause was the abrogation of the 1824 Constitution, and that Santa Anna was a tyrant, with perhaps some secondary side issues.

BUT the BIG MAIN MAJOR cause of the Texas seceding from the Union in 1836 was Slavery with perhaps some secondary side issues. Not the 1824 Mexican constitution, despite the fact 1824 was on the new Texas flag?

And that the “property” mention in the 1836 Texas declaration of Independence was slaves- not guns, cattle or food- all things Santa Anna had been stealing as he marched?

Is that the claim here?