They’ve been ordered to allow the federal agents to carry out their duties but adding new wire has “effectively barred” the agents from doing what the supreme court has ruled they have the legal right to do. Yes, they’re allowed to cut holes in existing wire but by constantly adding new wire and barriers, it’s actively defying that ruling.
I know the ruling doesn’t explicitly say “Texas can no longer put up razor wire” but this is like being told by your mom “your brother is allowed to play on the xbox” and you giving them an unplugged controller. They’re allowed to play on the xbox, you’re allowed to give them an unplugged controller, but you actively went against her ruling and earned a whooping.