uh, i believe all solid rollers have a finite life. the roller pin wears and it may break.
i do have the
oil hole lifters in fact i am oiling up the pushrods for the T&D rockers.
the hydraulic rollers may be different i don't know, but the solids will have the mileage restriction. i usually put maybe 2k on per year so lifters every 5 years isn't a problem.
this stuff doesn't phase me i tear apart my motor just to check things anyway. so dropping in a set of lifters when changing intakes or gaskets is quick.