In half a year Android can lose half its speed?
How's that possible? It isn't like CPUs get slower or RAM gets full, it would have to be storage related. Surely it uses a decent filesystem like ext3/ext4, and not vFAT for the internal storage, right? If it isn't getting fragmented, how could this slowness occur?
Machine learning to combat Android getting slow with age, that sounds like it might be an alternative fact worthy of the master himself!