Every battery has its own preferred charging parameters
and the NiMh charger is probably not ideal, but also likely
to work "well enough" - provided that you take some care
(like, remove batteries after charged and before cooked)
and maybe spend the time to determine what that really
is.
"Back in the day" we used to have chargers that would
work on carbon-zinc batteries (for a few cycles) but
would make an alkaline "lose its lunch" pretty quick.
The rechargeables I suppose have a better case
design. But having gone through a few sets of the
(purportedly) rechargeable alkalines, I'd skip them.
Low capacity, low cycle life.