Unfortunately, that isn't true.

Although my disc brake wheel moves around in the fork, it hasn't come out. Yet. I bought some better, internal cam quick releases, like you recommended. Enve's newer version of their CX disc fork is thru-axle, but the one I got in 2014 is not. (It looks like Figure 4 in the above post.) It popped out of my roof rack once. The fork is sprung instead of having lawyer tabs, but that I found can cut both ways.