No the grenade is absolutely fine.
Do you even remember this grenade is made of superior krupp steel and krupp flames?
Id say to bring incendiary grenade and molotov in part, relic needs to make the molotov at least 50 minutions and the flame grenade maybe free to give okw the chance to get schrecks faster to counter early vehicle spam from allies.
Relic cant bring allied units on par with axis units.
the already small player base will shrink to a few players only.
80% of the community are already axis only players who dont want to lose their advantage at everything.
If they take away easymode for axis they would lose a lot of customers and dont earn money.