It's cool with me. This isn't a origin story. My only worry is whats the long term plan with this? It's obvious they casted Spidey so young because they want him to basically be MCU'S Harry Potter. However all signs points to the original avengers leaving(either dead or retiring) After Infinity Wars. Spidey will still only be around 17-18 at that time so he'll still be way to young to lead the "New Avengers"
But who else would it be?? Maybe Falcon??(as the new cap)
He won't lead any group