It`s money management. If you want not only to play for process, for emotions but win - you must have strategy and follow it. Here we just see one big lose but we don`t see the full result. May be he made more than 1000 success bets with such odds and it means that his strategy is ok. I`ve seen how guys tried to catch odd 100 and i saw how they won.
As for me - i prefer make the same bet for all matches i analyzed and it depends on my "bank" - the sum i use for gambling. There are some other details, but it is just an example of strategy.
Making more than 1000 successful bets doesn't sound plausible even with such small odds. At least for me, a strategy with such low odds was almost always ineffective, as losses occurred much more often than expected. For example, 2 losses per 100 bets with such odds were not uncommon in my case.
We don`t know. We have only information about this bet. I don`t like such odds but i don`t have money to make few such bets. And, as i said, i have another strategy, that allow me to get stable profit. And one more point - most part of us don`t have such money and don`t understand how it works.
PS. My winrate is about 50-60% but the most part of my bets are between 2.2 and 4.5.