I'm not saying I agree with people who have "concerns about immigration". I might agree with them on some very limited points, while disagreeing on many points.
I'm just saying that Burnham and Labour need to have broad appeal among different kinds of British voters if they're going to keep Reform out of number 10. So I guess that's why Labour are trying to take a view of "yes we recognise concerns about high immigration, e.g. regarding pressure on public services, and we plan to deal with immigration in a fair and humane manner".