Same. I don't think history will look kindly upon someone who "quit for losing" while other professional Go players keep playing.

Just imagine if Garry Kasparov quit after losing to Deep Blue, he would be ridiculed today by the chess community which is still going strong. Instead, he accepted defeat, moved on, and is regarded as one of the greatest chess players ever. I doubt the same will be said of Lee Sedol 20 years down the line if this is how he chooses to end his professional Go career.