[morzh]

Actually the reason electrolytics should not be used for small caps replacement is not strictly speaking the ripple as the currents may be very small, but the frequency, leakage and such parameters which in them ar simply are dismal. Electrolytics were never meant for that; they were meant as a bulk storage with high per volume energy capacity. Using them otherwise is not expedient and often won't work.

Also when doing that people often forget about the fact that polarity should be observed. Which will kill it fast.