Can't reproduce.
Here is what I did to check it:
$ git clone https://github.com/dmcrystax/cocos2d-x.git
...
$ cd cocos2d-x
$ python download-deps.py
...
$ git submodule update --init
...
$ python setup.py
...
$ source ~/.zshrc
$ cocos new MyGame -p net.crystax.mygame -l cpp -d projects/MyGame
...
$ cd projects/MyGame
$ cocos run -p android -j 4 --app-abi armeabi-v7a
...
Having these steps done, I can successfully run cocos2d-x demo on all my devices, running Android 4.4, 5.0, 5.1 and 6.0 (ARM). Have not tried on x86 tablet yet, but will check soon.
Note that I've cloned https://github.com/dmcrystax/cocos2d-x.git instead of https://github.com/cocos2d/cocos2d-x.git. This is my fork, where I've fixed minor compile error, so it differ from official one by just "one commit":https://github.com/dmcrystax/cocos2d-x/commit/bc85f590265bcb2c1369e1e9ca7f011ff6b9b018. I've sent "pull request":https://github.com/cocos2d/cocos2d-x/pull/14727, so it will be merged to official repository soon.
Except of the mentioned compile error, I don't see any problems with cocos2d-x demo being built by CrystaX NDK 10.3.0. If you still experience problems, please provide minimal example how I can reproduce it (having logs from your device would be helpful too).