When Tom, our resident network expert, embarked on creating a cross platform Bluetooth stack, he noticed that while the APIs were relatively similar to comparable platforms, they didn't behave the same. In particular, he noticed incredibly different behaviors even with phones on the same exact Android operating system.
For example, Google Pixel phones could tell the operating system that they've disconnected while at the same time still recieve packets of data. In addition, all Android 9 phones also exhibited randomized failure of the entire Bluetooth stack. Since Ditto is primarily building a stream API on top of various operating system, it needs some uniform interface that promised to behave the same. However, we realized that we will need to constantly monitor different devices for unstable APIs, and write adapters, to "coerce" them to work with our streaming API.
Shameless plug (well you're on the company website 😉), I highly recommend that you avoid the Android Bluetooth stack at all costs and just use Ditto instead. The vast majority advisors and companies we've talk to simply have given up on the matter entirely. But as Tom has demonstrated, if you use Ditto you'll have taken our extensive experience in standardizing Android's Bluetooth stack without the headaches that you will run into if you decided to build it yourself.