I do remember the 'old' BA but it isn't the 'old' BA anyomore so people just have to move with the times.
To me it just seemed like the post was aimed at being 'they are only doing it because they have nowt better to do', which as stated, isn't really the case for MAN specifically, and as you state, this is a win win for all involved.
No need for scepticism, no MAN routes have been culled to make way for these routes, so it's all positive. Whether it turns into a 'BA Renaissance' or not is irrelevant, we are purely celebrating the routes we have for this summer.