When you're jungling smite is mandatory, simply put. It is near impossible to jungle without it especially for the items.
People forget smite a lot, and it costs games that could've easily been prevented if the player just swapped smite.
If smite wasn't so paramount to jungling, this QoL wouldn't be as necessary
But it's just, if you get placed in the jungle role, could the game just switch your F-key summoner to smite automatically? If the player wanted smite on g they can swap it and whatnot, but I think at least having smite auto picked as a summoner for the jungler role would prevent many pointless losses in league, thanks.