And let me also point out that it's practically impossible for a person to click the roll button for 20 times in a day when we have just 24 hours a day, I have tried something like this in the past years and didn't succeed, I slept off when I didn't even plan to sleep and lost over 9 hours 😁
Theoretically, it's possible, but in reality, hardly anyone will do such things for a few days. At least it implies a lack of sleep, and it's bad for health. In addition to this, now collecting free sats on freebitcoin is pointless, given that the minimum withdrawal amount is 30k sats.
Of course, some users can automate the claiming of sats, but it will eventually lead to a ban.