In this context, yes, for exactly the same reasons as GDrive. No one with any sense is going to be running a relational database or MapReduce out of either one.

Note that when I say "toy" in this context it's not really anything pejorative -- I use such "toy" filesystems all the time (sshfs most often, but also encfs and s3ql), and they're awesome and highly useful. But they're the kind of thing where, say, lock contention (or hell, even being single-threaded) isn't much of a big deal because they're not performance-critical.