Well, to be fair I don't have a huge amount of information about the FT as I'm not a subscriber. I do remember that they did publish at least some Keynesian economists during the 2008 financial crisis, although I think they were still part of the prevailing (and IMO mistaken) bias towards austerity.

But I think no publication is completely neutral. There are areas where they will accept opinions as viable alternatives, and areas where they consider opinions outside the pale and not deserving of consideration. A completely biased publication always picks one side everywhere, but 'neutral' publications usually are biased towards which opinions they will give serious consideration.

They other dimension is that articles written in a neutral 'style' aren't necessarily any less biased than ones written in polemic style.