The biggest problem with MOND is that it was hand-crafted with additional parameters simply to fit the data. What's missing is a reason or a mechanism by witch gravity stops following the inverse square.
Scientists generally take a dim view of such theories.
"With four parameters I can fit an elephant, and with five I can make him wiggle his trunk." John von Neumann
"With four parameters I can fit an elephant, and with five I can make him wiggle his trunk." John von Neumann