There could be a lot more people who are hitting that but there could be a lot of people who are missing it as well. Maybe it is not about the chances getting easier since it is not easier, it can't be easier the odds are still the same but there could be a lot more people gambling for that which means eventually more people wagering means more people winning as well even tho it means even more people losing too.
Or maybe it was just lucky period for the gamblers of the site that got very lucky and won back to back together, who knows? At the end of the day it is nice to know what provably fair looks like, the real provably fair is exactly this, you get to gamble and you get to win time to time, just because there is house edge doesn't mean you should lose all the time, there needs to be some wins along the way.
If Luckybit has now big multiplier like x999 or x9999 is because the value of the min bet, if we remember Luckybit classic the min bet used to be 0.001btc, and the fees were killer or the long run on an onchain game, has complex to make 50,000 bets in one day. But with the new Luckybit the min bet on Plinko is 0.00001btc and since user doesn't have to pay fees for each bet, then it's easy to play for the long run. We see users who daily place more than 20,000 bets. And they are on profit. Some other users have placed 1 million bets.
So, the house edge is the same but the amount of bets is enormous nowadays. That's why all those jackpot shots.