[Rick-Butler]

Security through obscurity isn't a good practice in general.

Because few people use it, security testers probably don't spend much time on it. So it could be easier to find vulnerabilities.

It's also end of support 7/11/2017, so nothing will get patched after (unless you pay for extended support). That leaves you exposed to any critical vulnerability found after that point.

So obscurity might save you from widely targeted attacks at the majority (android, iOS), but wouldn't stop any targeted attack against you.