I met at least 30 if not more people that got the same like me, all new joiners.
Nothing messed up, a part from the brain of the people that cannot read/understand what is presented to them.
The 30k comes from the wording they have, they say that 30k is the total cost for the company, but the amount to be reimbursed by the pilot is 15k, reduced pro rata, as clearly stated in the training agreement.
If you read the slides in budapest you might get the interpretation of your friend, but ask clarifications, and read the actual contract, and it will be crystal clear.