Why? Since winning the leadership he's told us he's against increasing corporation tax, he's against nationalising energy even if energy companies are in crisis, he's in favour of undercover police infiltrating trade unions, he's against teachers unions having a say on covid safety conditions in school...
It's not an insult to say he's quite right wing, it's just an observation. Some people are quite right wing. Why would it be wrong to acknowledge that?
The leader doesn't make the policies, that's done through the national policy forum through a wide range of party members and their representative bodies, the leader represents the wishes of the party.
You can argue that leaders have different personalities and beliefs and of course will have some influence over policy, but policies taken forward to fight on are owned by the party members. There are plenty of opportunities at a local level to raise and suggest policy and motions, however most people aren't even members or if are don't actively get involved and just offer simplistic criticism from the sidelines.
As a Corbyn supporter and on the left, as frustrating as it is to see the party change direction I lukewarmly will carry on being a supporter to ensure the removal of this disastrous government, labour may not be all I wish for at the moment but they are an opposition and a big alternative to what we have and I will continue to urge people to vote Labour and rid the country of this absolute shambles of a so called government.