xecomos139 No this kind of locking doesn't count as a BFU state nor does it put your owner profile in a BFU state. Only rebooting the phone fully purges the encryption keys of the owner profile. This is because the owner profile also encrypts system-wide OS data.
Encryption keys of secondary user profiles can be fully purged by pressing on the "End session" button and therefore putting the secondary user profiles into a BFU state at rest.
More information including the one I provided in my answer can be found here: