It kinda is, Through simple common sense.
Dembele is (uniquely) both a natural left and right winger, And since the right side is reserved for Messi, Only the left side is up for debate, But since the left wing is natural position for dembele but it’s not for Malcom, Dembele will always be ahead of malcom for that position.
I made a detailed post on page 102 on malcom’s Thread, Where i laid my arguements on how the current 4-3-3 is causing problems for Malcom, Where I invited everyone to debate with me about it, You’re welcome to present your counter points for what i said there.