I am still suspicious that this has something to do with the relationship between Springer-Verlag and the Max Plank Digital Library (MPDL) which supports open access.
In 2014 MPDL purchase 110k out-of-print and historically significant titles. In 2015 Springer acquired open-access journals from Max Plank Society. In 2022 There was an open-access book deal allowing Plank Institute members to more easily publish books.
Things were more not always so intertwined and in 2007 the Society canceled a licensing agreement with Springer due to subscription prices and usage restrictions.
> I am still suspicious that this has something to do with the relationship between Springer-Verlag and the Max Plank Digital Library (MPDL) which supports open access.
Why? Max Plank (the dead Physicist) has nothing to do with whatever the Institute is doing these days. Or the library. Or anything that was named after him.
Planck's papers contained multiple em-dashes -- so, clearly he used ChatGPT to write these papers.
He should have known better. </sarc>