Typically, casino promotion with wagering requirements doesn’t count some bet with low house edge or in his case 1.01 because this is purely not gambling but rather just a bet to claim reward which is not the way promotion was intended. Promotion is to make user engage on gambling by claiming the reward. Casino is a business after all.
Even though it's a business, casinos know that people will use every possible way in their favor. If casinos do not like users to place bets on low odds, they should not allow them to place bets there. Casinos know players will do that and they keep it so they can accuse players later if they make a huge profit from it. Casinos also use every possible options to deny user withdrawals when they win big.
Why do you play in a casino if you don’t want to take a risk?
This is why I said that rollbit might not aware on this kind of strategy to safely clear their protion with minimal risk involve and later on ban him when they detected.
I have a counter question. Placing bets on 1.01 odds does not guarantee that this is 100% safe. Why not take minimum risks when I can take it? The reward for the minimum risk is tiny as well. Why would I take risk when there are other options. If you don't give me other options, I have to take risk. I guess rollbit aware of it because there was another case in this forum. If it's a common pattern, then it's known by the casino already.