If judging by that post which that user made, a bet of 1.008 odd and stake 1.4 million dollars this could have shown that even the least odd can't guarantee winning for long run, but when a prediction is exacted to what you bet then there is every chances of winning, and of course you can win that continuously but we should also know about how matches are played most times and it would go against our bet.
In sports betting the odds are really not a factor because even an odd of 1.01 can end up going sideways. Few months ago I placed a bet of 50 odds with 5 thousand naira, I combined about 20 games to accumulate up to that odds amount , I remember quite well that there was a game I added that was 1.03 odds, the option I picked was over 1.5 goals but that game ended up as 0-0 I was quite disappointed because that was unexpected considering the fact that the odd was very small. Odds are just numbers nothing more