One of the things the article mentions is that people are displeased that their add-ons are easy to copy now.

That's true. Times have changed, and you can no longer be remembered as that guy who invested time into making a community plugin using a weird scripting language that few people knew how to use. If you had some unique idea that others liked, it will probably be incorporated into all other plugins quite effortlessly, and others will propagate it not knowing where it came from.

Because of how much easier some things have become, it's much more difficult to get attribution for some deeds, and it's starting to become true for more domains than just WoW plugins.

I’m super happy with the explosion of development of addons. Claude and similar tools allow everyone to change the game in any way they like. This has been a tremendous positive development for the game community. I’ve seen so many cool things thus far.

So, stay mad.