They do, but I think they are considering moving off of Shopify. The reality is that shopify has a ridiculous amount of down time, and any high traffic store will actually be losing real revenue as a result. Just scroll their status page, they consistently have several outages a month.
Sorry was typing on my phone and didn't clarify. I have a friend who works at Allbirds and told me they are strongly looking at migrating because of the down time issues.