My issue with the removal of the WFA allowance from those not on Pension Credit quite apart from the disproportionate impact the further north you go
is the lack of notice
. Especially after he had a go at Sunak for considering it at PMQs in May 
Being voted on quite literally weeks before people were expecting to receive it doesn't give people time to budget nor to apply for Pension Credits, given that there are many eligible who don't get it
. I don't have personal experience, but I understand that the process for applying is not as simple and straightforward as it might be 
It would've been much fairer to announce it as being put in place for next winter, so that people had a chance to plan and/or apply for Pension Credit if applicable.
The Labour Party is not managing its message well as at the moment it would appear that all its efforts to "plug the black hole" are impacting most on "ordinary" people: pensioners, potentially the long term sick, welfare recipients, non-repeal of the two child cap... 
There doesn't appear to have been much done to address tax evasion (illegal), tax avoidance (legal but more should be done on loopholes), non-doms, energy pricing (and I don't count setting up GB Energy as addressing that
)..... 
There may be work going on but as I say, their messaging is crap at the moment. 