In that case, you do have the option of upsizing the breaker to 50a. I wouldn't do so until and unless I anticipated needing the extra capacity. For example, if you wanted to plug in an RV, or wanted to wire in a wall connector and charge at 40a instead of 32a.
I've been using a 30a EVSE on a 40a circuit (using a 6-50) for a dozen years at this point. In my case, the wiring is not capable of more, and I've never had any need for more. When I put in a second outlet for a second car a few years back, I sized the wire for 60a, and put in a 50a breaker with a 14-50, but only as a future proofing strategy. I still only charge at 32a on that circuit.
The only reason I didn't do that the first time is that I owned a LEAF that could only charge at 16a and the 40a circuit seemed very future proof...as indeed it has proved to be.