There are major concerns about how the UK government is handling the process of exiting the European Union. However Corbyn seems determined to do all he can to ensure that Article 50 is triggered as quickly as possible. He hasn't come up with any proposals for dealing with quitting the single market or handling the ending of free movement agreements. Two issues that are fundamental to the future wealth and welfare of Britain. It's almost as if he's expecting Brexit to lead to a revolution which will end in the people rising up and overthrowing the government. Given that Corbyn's ideas have not been revolutionary, or even evolutionary, it is highly unlikely that he will be at the forefront of that revolution should it materialise.
It could be said that inexperience and constant talk of leadership challenges have undermined and impeded Corbyn's tenure. He however has repeatedly gone rogue with statements not in line with Labour Party policy and clearly not discussed with beforehand with his cabinet or MPs. He has failed to adequately engage with influential groups in the Labour Party and put forward an effective front as opposition. This has also meant that the Labour Party has not successfully presented itself to the public as a government in waiting. In fact, it has not come up with any clear positions on the economy, transportation, health, housing or immigration.
It is unlikely that the Labour Party can win a future election under Corbyn. He could however do a better job of holding the government to account. And maybe developing a policy framework that presents a viable and attractive alternative to the current brand of fascistic conservatism being shoved down our throats at the moment.