If you plan to sell games, why on earth do you want to target Android4? That is almost 15 years old!
No one that buy games will ever use an Android4 device, that's for sure.
Why not? If it works on Android 4 it works also on newer versions, so it's just an additional option.
I wanted to buy some apps for my tablet and I couldn't because not supported.
Of course I am not going to develop a 3d MMORPG for Android 4.
But anyway, that's a thing to explore, I am happy to spend a bit of time to see if it's possible and if it works, if not, I can still export the game for newer version so no issue for me aside for find out how to export for old Android versions.