[Stenzio]

Charging via movement is fine, charging via electric damage is 'not' fine, but it can be toned down instead of removed. Or even re-conditioned.

The easiest solution (or something additional to it) for this would be if the enemy procs green text (resists electric damage), it won't feed Thunder Hooves it's charges. The same way Rysers work. (They won't reduce momentum if the enemy resists electric damage).
--So this would incentive people to atleast try to build some electric resistances before fighting a thunderhoover. Since they're expected to use lightning a lot, it would be a double-shutdown and everybody would be happy(salty?).

But overall? It's not necessary to nerf anything, or won't even need to be nerfed if the insulated-enemy-doesn't-grant-charges opinion goes through. (And if Redgull is being overused thanks to Thunderhooves? Just pack some Nerhaven enchant/badge and roast them good.)
But this may just be me, I'm the only one who never had problems against Thunder Hoover users. Grapple is a bae. Wild Grass is a bae.

Still on the train of just re-conditioning or toning down the amount of charges gained from electric damage. That is all.