I’d take the inexperienced player.
I would hate if it ever fell upon anyone to point out other's flaws and mistakes. Sorry, but if said person is so fucking better, he probably wouldn't have been matched up with me. The team / one 'mate drags him down and then starts crying it's the their fault, and can't carry? Then we are not that so fucking good, are we.
Your team are people with whom you are stuck on an abandoned island and you have to survive. Even if they are what you claim to be bad, you are stuck with them so you'll have to work with that.
I, personally, don't respond to pings because I mute them all. Sorry, fellow EU Westerners, but thank those who misuse pings in a disgusting way by spamming it to question whatever I'm doing. Same goes for chat. You best be a Legilimens if you want to communicate with me.