No, he didn't. This is another absolute myth peddled by the centre - Corbyn won among the membership in 2015, overwhelmingly (49.6% vs Burnham's second place 22.7).
Which is a fantastically circular argument. Centrists help worsen any subsequent Labour GE campaign by removing forty-odd seats, but its subsequent Labour's fault because it can't overcome that.
Attlee "hardly left wing"? Not sure how you get to make that statement given that his government nationalised the likes of Pickfords and Eddie Stobart as well as the hospitals, railways, steel industry, power generation and housebuilding.
Tubey - the fantasy politics is pretending that centrists have either a candidate or an argument that could do better than Corbyn has.
It takes some balls to make a statement like that, accusing me of revisionism when you've managed to be wrong so many times in three sentences. For a start, New Labour didn't come along until Blair became leader in 1994, and when Kinnock fought his last election (in 1992) the Tory majority was 21 (and had 65 more seats than Labour). By the 1997 election, that majority was effectively nothing - so how you can pretend Blair overturned a three figure seat deficit is not something that is can be understood.
Were you even in this country between 1994 and 1997?