It's simply stuff that people like to believe. The only aspect in which manual betting is better than auto-betting is the ability to minimize your losses since auto-betting systems can blow your bankroll very quickly.
This applies to literally every gambling related game out there.
I just wanted to clarify that i didn't refer to the equality of the chance when talking about manual/auto-betting.
What i'm talking about is that "usually" peoples who use the autobetting/bots when placing their bets are more likely going to hit the jackpot or a high profit because "usually" manual gamblers wouldn't place the same number of bets being placed by an autobetting/ a bot user. Usually, manual gamblers are likely going to place "All in" bets which increases the chance of losing their capital while others will decrease their bet amount and rely on the bot playing their cards on the high quantity of bets which really increases their chance of winning. I hope you got my point.
I agree with Huanebu, in terms of the same number of bets, autobet and manual betting have the same chance of winning the jackpot but I do understand that with autobet, a player can just leave it there rolling for longer time and creating more of bets thus making autobet having more chance of hitting the jackpot due to the number difference of rolls made.