From a logical perpsective unexpected removal of metadata seems like a worse outcome then failing to remove metadata. Because there are always other ways to remove the exif data (and you don’t have to worry about anyone accessing it when encrypted anyway). But you can’t recover exif / metadata once removed., so unexpected removal is an unrecoverable error.
With all that said, i don’t personally rely on the metadata of files saved in cryptomator so it doesn’t affect me one way or the other.