Huawei OEM lock?

Good evening I wanted to ask what that means when I unlock on my huawei on OEM lock clicks "the security features of the device no longer work on this device" and I wanted to ask if I click on activate because the unlocked because then you needed a code for it

Oem lock is the same as this iCloud lock from the iphone
Then nobody can use your cellphone

No, that had something to do with the bootloader because you could raise other systems