I left the LP quite a few years ago over self Id and the fact my CLP had become overrun by Momentum supporters who acted as self righteous "overlords", bullying long standing members if they didn't get in line (the people btw who instead of just acting as keyboard SJW's on FB and Twitter were the ones distributing campaign leaflets, speaking to the electorate and doing the party admin).
There was no debate or discussion allowed.
Frankly it had ceased to be a political party and had become an ideology.
I don't think at grass roots much has changed and that's a big problem.
A political party understands its support base and crafts policy that reflects its needs and aspirations.
The Conservative party has always been better at Labour than doing this. They are ruthlessly pragmatic.
If something isn't working they don't navel gaze about it - they change it (be it a leader, a policy or advisors).
By contrast Labour (and the Greens/Lib Dems), because they have always felt themselves to be on the side of "righteous" find it very difficult to re-boot a position once they've adopted it even if it's deeply unpopular with the electorate.
To do so would be an admission that they are the same as Conservatives in that at their core their "values" are mailable - making them not "values" at all.
But that's the difference between a political party and an ideology.
Parties should have policies, not values and those policies should be flexible to meet the needs of the country (are more specifically its support base) at any given time.
Labour is in crisis because it's been overtaken by a membership whose frankly middle class, champagne socialist "values" do not resonate with its former voting base.
Rather than acknowledging this, the response has been to believe the failure has been not one of policy but one of not "educating" the voters and that's a double whammy of not only failing to differentiate between values and policy but being simultaneously utterly patronising to the people you want to vote for you.
It's a wholly negative spiral that's further amplified by this determination to demonise anyone who thinks differently.
Former Labour voters who've switched aren't bad people (and frankly neither are regular Tory voters).
Those who've switched are frustrated and angry with a party they feel (quite rightly) has abandoned them in order to win approval from vocal middle class social justice warriors who for the most part have zero life experience of actual (or should I say literal) hardship, deprivation and inequality.