Yeah definitely, and that can only be good for democracy. There's not been a competent, electable labour leader since Blair, argument for Milliband but he was never electable as PM really.
Best thing for labour is to slowly scourge momentum,R etc from the cabinet and influential positions (I understand them being there now) and eventually get the party to a stage where it's at least somewhat unified. I think Starmer can do that.
My concern for him is that his growing voice at the moment could end up backfiring as it's easy bullets in the chamber at election time that he was "unpatriotic" or unhelpful. I'm not saying I believe that btw, just that it will definitely be used.
Overall, I think labour need to be very very careful about the next time they get to propose a spending plan. Public appetite for austerity was there in 2008 after the crash, and it may so happen that the British public again realise that that is what necessary moving forward again.
The risk will be if Labour ignore that and propose big spending increases to try and win an election. If that works, we could be left with a "we have no money" situation again, or if it doesn't, it will compound the arguement that their fiscal policy is outdated and out of step with the British public. Just a lose lose really if they go down that route I think. I trust Starmer is more intelligent than that but I wouldn't be so confident for the "won the argument but lost the election" crew...