So a dice rolling over rolling out of nowhere makes more sense? Go back and read the literal lower half of what I said
They should fix that indeed. You shouldn't know that is called torchstalk - you should know it as "strange glowing mushroom" until you pass your nature roll.
Rolling dice makes sense. It was clearer why that made sense in 3.5e than it is in 5e, but the principle is the same. Someone who studies a little about nature - or perhaps underdark lore alternatively - would know a little bit. Someone who spends 6 ranks in it studied 6 times as much and is going to know about more obscure things than the person who only studied one. You lose a bit when it is only a proficiency with a standard growth in the size of those bonuses, but that would be for someone who actually studied nature. You can have someone with a degree in nature studies who doesn't know everything - even a PhD would specialize in one subset of nature and wouldn't know everything about nature - but your average Joe might have heard about torchstalk in a tavern one time while that PhD focusing his studies on herbivore foraging never heard of it. The PhD is more likely to have heard about it than our average Joe, but that isn't guaranteed. You get a better dice roll with proficiency in the subject than you do without one - and it used to be that you had a better dice roll with every rank you invested in the subject. You may think that is torchstalk - it doesn't mean you're right from a roleplaying viewpoint (though it is hardcoded in the game as torchstalk). There is a reason that pyrite is known as fool's gold - those with low ranks in mineralology IRL saw this shiny golden hard thing and thought it was gold - they misidentified it.
Ideally, it should have multiple mushrooms that you can go through and not tell you if you failed a roll and merely thought something was torchstalk when it wasn't - but there's always room for improvement.
