The corruption appears to be a software issue, but SSDs are vastly more capable and reliable storage devices than any flash drive.
I don't see a good reason to buy a flash drive for this purpose considering these prices of SSD drives. There's no shortage of space in the console and it doesn't need to go inside another device like a microSD so who cares if it's a bit larger? SSDs can write video all day long without breaking a sweat but flash drives tend to get really hot in the same situation.
$29 Kingston 240 GB
$50 Sandisk 480 GB
You can get a full USB enclosure
like this one for $9 and there are also bare SATA-to-USB adapters for $5.
I do hope Tesla adds a video player of some sort to the car itself so I don't have to bring the drive with me to a computer to review the footage.