I think it will be fine. We have all done some crazy cuts.
Super glad you were nearby, if it did start heating up it gets ugly fast.
You can cut pretty dang deep in BB sheets. The reason most of us do not push the limits in other materials is knots. MDF is very homogenous, and therefore you can push the limits further because you know there are no surprise knots in there to mess things up. (too bad MDF is one of the hardest “woods” to cuts). BB is very reliably surprise free, any knots are sliced to a thickness that does not matter. The worst thing about is apparently is the glue between layers. On regular Ply you can get gobs of it in small voids but BB does not have those.
People do cut 1/2" aluminum in one pass, they just typically use trichoidial milling. I do not have the eggs to try that.
That makes me think about all those benchy speed tests. We need something similar. 12mm MDF Logo runs?