Not really, granted drag is important but it isn't game over until they get 5th drag even then I have won a game where they got 2 barons and 5th drag twice
I usually just give up the 4 drags unless an opportunity presents itself or when they take drag you exchange it for another objective
You can continue to just give up if you want but don't encourage others
In all honesty you should just play the game out it helps to learn to play from behind
I'm in Diamond V and this is the case in my Elo
Even in your Elo Plat V this is even more the case people are terrible at closing the game out
Idk I guess maybe in EU people just give up easier but that's not the case from my experience
Overall I wouldn't say comebacks are close to 0 more close to 25 or 30% at least in NA