No it’s gone for s24 one UI 7.
I have a s24 here and the last update to One Ui 7 removed the bootloader unlocking option in dev mode. But that was mounts ago and no one talked about it back then so they did it hidden in the dark. Disgusting. See by your self and confirm it.
Here’s the complete article: https://archive.ph/b2ZTb
I checked, I didn’t know but if you reside in Canada or in the states they are hardware blocked so its literally impossible to hack the device and unlock the bootloader. Thats only for the snapdragon chips not for the exynos ones. So yes don’t buy samsung phone anymore.