I just did some research on this--it's worse than you think.
Per this source below, the sculpture is most explicitly inspired by a photo of MLK Jr. and CSK hugging
after he was awarded the Nobel Peace Prize.
In 1964. In Oslo.
https://artnewengland.com/news/boston-common/
That's right: a decade after he left Boston, more than 3,000 miles away. There couldn't be less of a connection to his time in Boston, if they had tried.
Would it have been too much to ask to have a sculpture of him sitting at a study desk, with copies of books by Gandhi, Thoreau, etc., laid open on the desk, and his body posed in a reflective posture? That would pretty obviously connote his time in Boston, and the history-altering significance of his exposure to the canon of nonviolent civil disobedience at BU, would it not?
Barring that, there are so many more obviously stirring and dramatic sculptures that could've been done--like something inspired by an image of him walking at the front line of a protest march, hand-in-hand with CSK, but also hand-in-hand with ministers of varying creeds and complexions....
something like the photo that is repeated all over the sculpture website!
Point being: given the number of schoolgroups that will presumably be brought to see this, this sculpture needs to be pedagogical, instructional, whatever you want to say. "A teachable moment." What the hell does two disembodied hands teach?
End curmudgeonly rant.