Add to the definition nebula of "equalize", "recondition", wet cell, AGM, the advent of the pulsing chargers, many of which have a "recondition" mode.
FWIW, I have a bank of AGM and FLA's that are charged in parallel. It's too soon to offer definitive findings about longevity or loss of capacity but short term monitoring (one year) shows the batteries to be performing well.