Thanks for all replies. For some reason I felt that ANN has to be large to perform something useful, and small ~10 neurons ANNs seemed like a toy compared to ~1

Thanks for all replies. For some reason I felt that ANN has to be large to perform something useful, and small ~10 neurons ANNs seemed like a toy compared to ~1e6 nets. But, as you pointed out, if it does the job then it is good enough, no matter the count of neurons.