The Marvel-style quips wouldn't be too bad if the voice actor didn't sound just like a normal dude. I mean, they're talking flowers! They should have cartoony voices! All other Mario characters have such unique and wacky voices, why do these flowers sound like they're from a Disney Channel movie?
Again, I'm just nitpicking for fun, I think the game is adorable and I'm having a lot of fun. Good game, highly recommended.
Also, Mario and Luigis new voice actor sounds great! His Wario voice isn't stanky enough IMO but eh, he might improve with time.
EDIT: OK FINE YOU'VE CONVINCED ME THAT THEY'RE CUTE
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy: