"resulting in three publications accepted at top-tier academic ML venues (NeurIPS, ACL, ICLR),"
To add context in case people get misled by this line, the NeurIPS and ICLR papers (N2G here) were workshop papers, as far as I can tell, not main conference papers. For people not in ML, a conference like NeurIPS or ICLR has both conference papers (one of the highest status ways to publish in ML) and workshop papers (lower prestige and less selective, I'd roughly say a workshop paper is 1/3-1/2 as impressive as a conference paper).
To me, the prior is that most hackathon projects are a total flop and don't go anywhere, so helping someone convert it to a workshop paper is still impressive! (But main conference would have been very impressive). And the ACL paper was a main conference paper, which is impressive!