Oh well, pilots get to choose. They want to run the risk not to pay social security and "save" the money"? They can. And most of them do. Until they catch them at least.
Local contracts are now also available in every country in which pilots are based, and you have at that moment the rights of every worker, in accordance to the local legislation.
Your choice.
No **** that the rules in Hungary or Latvia are less favourable to the employee than let's say France or Germany, in terms of social security.
Let's not fool ourselves, most of the pilots go the Confair route because of the extra money, money that they save not paying social security. Then they get sick, and they complain because they get no sick pay, which, surprise surprise, after the first few days, is generally covered by the social security system that they didn't pay for. Funny people eh?