I would say it's a necessary Garen tweak
Those who play Garen know his E can crit. After so many changes these last years items like
,
and
lost their crit % stat. With the new rune system we lost ability to apply specific stats like crit %. The items that still have this stat are not really worth to use I think. Instead of an off meta build it's more like a troll build now.
My suggestion would be to remove ability to crit with E and convert that little bit power into something more useful. As it is now Garen needs crit % in his kit or new items that can offer it without a lot of unnecessary stats.