How should AoC deal with streamers/youtubers uploading DPS parsing videos using 3rd party programs?

Warning if they're not the type who are popular enough/into the genre enough to know better.

After that (and everyone who should know better, up to Intrepid's judgement based on performance or amount of influence in the server/community), instaban, of course.

I'd probably go with 3 strikes system. Slap on the hand and a warning, a week ban and a permaban. I'd mainly apply this to direct stream clips rather than analytical videos that Noaani mentioned.

People will be analyzing gameplay and make videos about "best builds" based on the tools that they have to analyze the game with. Intrepid should know what kind of information the player is provided with by the game, so if the video shows info that couldn't be gathered from the basic combat log or purely through visuals of the game - I'd suggest copystriking those kinds of videos. And obviously you'd need to tell the players about that rule beforehand.

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I think that whole thing is resolved by one line in the EULA, no? You just say "we have the right to ban you whenever we want for no reason at all" and you're safe as a company.

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Many content creators thrive on clickbait and drama.

"I got a WARNING for this Video" is much less effective for getting their effect than:

"I got BANNED for doing this!"

And they can spend a whole video not mentioning that they only got banned for a week, to make people watch the whole thing.

Short bans are almost a reward to some, in the scenario we're talking about.