Surprisingly you are saying exactly the opposite of your title. Ot maybe you've made mistake and you wanted to say is it true that you don't win if you're too much lazy? While replacing gambling by betting, because for gambling you don't need to do that most times. When you bet on sports it's different than gambling games, you need to evaluate the likelihood of the outcome to happen.
From the presentation of the topic it quite off from the message he was trying to send across but we are experienced enough to know that it was a mistake. Gambling doesn't have anything to do with who's lazy and who's not, like you said, most times it's not actually needed. Sports betting is a bit predictable unlike casino games that are controlled by the house, no matter the hardwork you put into it might just be a waste of time.