At first, I am recommending to use the manual command: man encfs. The encfs command makes an encrypted filesystem.

In case of Single password mode configuration it doesn't matter how strong is your filesystem encryption, if the hacker crack your easy login password. He will be also able to access your filesystem.

There are different cases when you have separate passwords for the login and the encrypted files/partitions, etc.

1. The whole SSD/HDD encrypted. In that case the attacker cannot access your file until he cracks your encFS password. In that case your user password is also encrypted.

   
   



2. Another case when the system partitions are not encrypted, but there are files/partitions which are. So in this scenario, an attacker can mount your sys partitions and may have access to your hashed, or encrypted password (by a password hash algorithm). But the attacker will not able to read your encrypted files/partitions until he brute forces the password of the encFS.

   
   

To answer your question:

If you used the laptop in Single Password mode with weak password, the likelihood is high, because you reused the weak password.

If you used 2 passwords and the encFS password is strong, it would be very hard to get those file.

Further information:

https://wiki.archlinux.org/index.php/EncFS