It can show a lack of integrity and manipulate perception legacy wise. I'm lost by your saint comment. A saint is someone whose accepted Christ, not already a perfect person.
Garcia is an odd case. He seems to massively overrate his ability and intelligence. He's a very good boxer and a smart guy, but he thinks he's Mayweather and a business genius. He passed up plenty of winnable 140 fights chasing the big pay days that never happened and ended up cashing himself out to Errol. Absurd career management. Brook got sold out by Eddie, plain and simple. Not sure Eddie even planned on Brook beating Porter so he felt he was gambling with winnings.
None of that matters. They still got in the ring, they still climbed through the ropes. They still have it everything they could to win. They still dared to be great.
Integrity in Boxing ...sounds good Lol.... Lets see DLH, Canelo, Mayweather, Don King, Bob Arum, no doubt many ,many more....you sound naïve or a lost soul... Integrity...Boxing.......OKAYYYY... Have a look here as an EXAMPLE Canelo handicapping Bivol at catchweight