Actually there is a solution to stop speed hackers. I know this because I have speed hacked my self to see how is easy it is to hack era. I found out the era severs do a speed check and if you speed is too high your Insta jailed but you can by pass this by using speed hacks in bursts not full on.

One of the solutions is not allow android devices bellow 4.1 play era because bellow 4.1 android devices can be rooted which a lot hacks in era