Most cargo trikes are hard to handle at higher speeds, especially when cornering or braking. There is the Babboe Carve which allows leaning into the curve to help avoid that disadvantage.
This seems to be a similar “fix” for a two-wheeler weakness. Not entirely pointless…
We rent bakfiets for our pup from a couple apps that all use 2-wheel models. There are some parts where it’s nice to let the dog out and bike along side her where it would be nice to have more stability at low speeds.
However, we do ultimately plan to get a two-wheeler when the time comes to purchase our own.