Isn't it just better to believe the majority of any region are illegitimate clears?
People are just doing it for the sake of clear so does it matter?
If those that care for "prestige" record the all fights in the game to where your entire party must do it to prove no addons are used on anyone. To be honest that won't happen.

If beloved Yoshi-P and SE was really against it. They would implement a anti-cheat. They don't have a hard line stance to stop players.
So players should do what they like for the sake of fun with their little time to play the game.
That announcement was mostly for 1st clear and legitimacy for that title.
Rules are more like guidelines than actual rules. ¯\_(ツ)_/¯