I don't think he was ever against it, so much as it didn't even exist when the Pyra was in initial design phase, and through most of R&D. USB-C has only recently started taking the lead as the standard. To change the board now, after all the work that's gone into it, would add so much overhead that it wouldn't make any sense whatsoever. MicroUSB isn't going away anytime soon; heck, miniUSB is still around! So there's nothing to worry about. One day, 10, 15 years down the road there'll be a USB-D or whatever that ED can start looking into for the Pyra-2. If you want to wait that long go right ahead.