> Unfortunately, nobody follows through with its sanctions, so it's devolved into a glorified opinion-providing body.

That's a little misleading. What actually happened is summarized here:

https://en.wikipedia.org/wiki/Appellate_Body

Since 2019, when the Donald Trump administration blocked appointments to the body, the Appellate Body has been unable to enforce WTO rules and punish violators of WTO rules. Subsequently, disregard for trade rules has increased, leading to more trade protectionist measures. The Joe Biden administration has maintained Trump's freeze on new appointments.