It's part of a two-piece art installation wherein each signature was developed by "AI" based off a few hundred signatures. To answer your question, it's ironically nobody's name or signature, but "everybody's" signature at the same time. More on it here:
https://listart.mit.edu/agnieszka-kurant-end-signature-2020-21
The artist then goes to explain social movements and people (social capital) can play a more significant role than financial capital in the 21st century, which is hard to connect with a simple signature on the ceiling of a building developed as the result of a multi-billion dollar fund that's single-handedly altering the form of Kendall Sq, one of the fastest growing economic hubs of the past decade, and developed in coordination with MIT's main money maker department. To each their own.