It remains to be seen, but a reasonable argument against this is found in the progression of chess AI engines. After Kasparov was beaten there was still a period where the best humans working with machines were still better than the machines on their own. Eventually (around 2020 I think?) this was no longer the case, having even the best humans on Earth in the loop was a net negative. There are reasonable arguments against this, but I've found them mostly unconvincing.