Edit : I see that some replies are talking about parlay. FYI, this is not about parlay, it's about making many single picks on a regular basis. Please avoid using parlay when sharing your opinion.
OK, good thing you came back around to address this, and I don't think you should blame the users who are talking about parleys, for the way you structured your post, anyone would easily assume that what you are talking is parleys, I also thought same while reading the op myself.
Well, back to the topic of discussion, I would agree with the experts, as well as you who shared this here, sports betting is just like trading, the more the coins or currencies one tries to analyze and trade in one day, the more they are likely to end up making more loses than gains, for like it is commonly said that we can't eat our cake and have it, or that one can't server two masters at a time, one can not give attention to numbers and still give the same level of attention to quality, we either do more and sacrifice quality, or do less and keep good quality.
Wanting to bet on a lot of games in the day sure lead to losses most of the time, I've had a practical experience of this in the past when I was a member of a betting channel on telegram, the day the channel owner posts a lot of picks, we loss most of those games, but the day, he posts just a few picks, we win most games and loss very few if at all.