If that happens, it'd be the last straw - I probably won't be voting Labour next election.
But it might not be true - The Telegraph is generally a crazy paper for crazy people. For a supposedly 'serious' broadsheet it's been quite, quite mad for many years now, even as it's changed ownership repeatedly (not sure who owns it now). Conrad Black used it as a platform for his crazy libertarianism and his wife's fervent Zionism, and under the Barclay Brothers it even seriously upset its own staff because of their alleged meddling in news coverage for self-interested purposes. I can't remember a time when it wasn't completely doo-lally.
Lots of UK newspapers are completely unreliable and biased to the point of derangement. The Mail is often singled-out but it's actually not as bad as The Express (paper for northern pensioners obsessed with migration and the evils of wokeness) or the Telegraph (paper for right-wing wealthy southerners).
I don't like Starmer very much, but at the moment I'll settle for anything that isn't this bunch of incompetents.