It plays a nice song to the 'einstein/newton was wrong' crowd, and it is philosophically interesting to think that our observations validating Newton second law were (at the time) only made on earth.

And some MOND derivatives are interesting, TeVeS is mathematically nice. I'm pretty sure most people working on those do it for the math more than to be correct tbh, but people way more competent than me work on this subject and I would not dare claim knowing they're wrong or lying.