This is not true. Nigerian traffic is not Indian traffic. I earned almost $500 last year with AdSense in a month with a CPC of $0.50, purely Nigerian traffic.
Ezoic epmv sucks to be honest. When I joined newly, I made reasonable money with ezoic at least for the first month with same Nigerian traffic I earned $60+ in a month then second and third month things started to drop to the extent I hardly get up to $1 epmv even with the so called optimization at the latter stages.
I'll soon ditch ezoic again for good, this time.