That's a falsehood Seagull, and you can find it out yourself by looking at the bitcoin-dev mailing list and the bitcoin git repo.

80 bytes was the intended OP_RETURN this whole time, it's just that Core decided to incrementally roll it our for safety reasons. After 9 months at 40 bytes, with nothing breaking, they concluded at 80 bytes, which it's been that way for a decade now.

Luke is lying. 

 Dude... You're arguing over a configurable default...  

 We finally agree on something 

 We probably agree on a lot 🤷‍♂️