That's not very good for Labour. If you look carefully, the areas they score well in are emotive, simple questions - "fairness", "heart in right place" and so on. In short, that's clearly the young vote. 2017 saw a 25 year high in the young vote, an increase of 16% on 2016 as they were enthused by Corbyn. And they still lost.
Here's your problem - with a leader not being decisive on Brexit, Labour will lose a portion of those votes to a resurgent Lib Dems who have a clear message.
Whereas in terms of practicality - "make decisions", "right priorities", "competent" - as in the things people actually vote for above the age of around 25-30 - they get thrashed. Yes, the Brexit Party may take some votes from the Tories, but with Johnson being so definitive on Brexit now, he'll just argue that Farage is aiming to do just what he's doing now and will face the same legal issues in parliament as he does, and a vote for Farage takes away the chances of the Tories - an established party - getting a majority and delivering Brexit. Which is actually completely true.
What it does demonstrate plainly is that we need a second referendum to sort out Brexit before a General Election, because the poll is 100% right in that regard - people want a GE to be about much more than Brexit. Whatever way a referendum went, a Labour government would be infinitely more likely if Brexit was resolved first, as they are terribly weak on that subject due to the ambiguity of Corbyn's position and his general unwillingness to lead an overtly remain party as a closet Brexiteer.
