No it hasn’t become so dangerous and surveillance doesn’t help. Neither cameras nor real-name accounts actually helped to prevent crimes. Same with databases, lists or other surveillance tools. Many criminals who committed terrorism were known to the police before and they chose not to act or processes were not in place. All it does is lead to less freedom and security. The government itself is the security threat. There are always black sheep working there. They sell private details, enforce their own agenda or fail to secure sensitive information. Also extreme political parties can and did/will use it to silence undesired persons. Ask anyone who knows a bit of German history for many good examples.