The two cards are a bit interchangeable now, allowing for more versatility in Humans that can take care of artifacts or enchantments
Against any aggro deck, the browbeat will most likely leave you with 3 cards and no mana, paving the way for an alpha-strike and consequent loss the next turn
meaning that even if the opponent does have a little creature removal, it can be annoying to deploy
Many players create showcase versions of Commander staples, custom cube cards, anime alters, borderless artwork, full-art lands, personalized commanders, and fan-made Secret Lair-style cards for casual play and collecting
You can mitigate its effectiveness by not trading off Hero tokens versus black decks or relying on something like Hecteyes
or/and in anticipation of the target becoming damage-able before resolution