Mike is not a smart person not sure because of dyslexia or because he never really had to worry about his future.
He doesn't seem to actually have a own personality, he looks like a dummy in all the videos, what annoys me the most is when he tries to be cool and funny, his recommendations on the gift guides are the worst for me he is a total pussy. He does have that same thing as Fleur of making sarcastic bitchy comments although she is the queen on putting others down.
About Fleur as someone said she only had her long time followers that liked her mostly for nostalgia of the old youtube days but many already left her after the Dubai thing, her channel got stuck in a number and never really managed to grow up, her insta is mostly fake followers and likes hence the low engage rate. She has a very old boring person personality, just remember her video with Tati and how out of place and uncomfortable she was.