Osterhout's response to Pepelnjak's criticism is solid, but he mentions not being familiar with SCTP. Homa is much more fairly compared to SCTP than TCP, since

Osterhout's response to Pepelnjak's criticism is solid, but he mentions not being familiar with SCTP. Homa is much more fairly compared to SCTP than TCP, since there is a large intersection with the problems they solve. Osterhout seems to think that ACK-based sender congestion avoidance is a significant problem in the datacenter. SCTP uses ACK-based sender congestion avoidance, but lacks the head-of-line blocking that TCP has[1]. Comparing Homa to SCTP would be a good way to test this thesis. 1: Or rather it's optional.