Can the same configuration be reached from Settings instead of the wizard? Why does the wizard exist?

Yes — the equivalent configuration is also reachable directly from the Settings / developer section, because under the hood the wizard simply writes to the same PlatformSettings store. The wizard exists because raw settings are complex and unguided: presented as a flat list of keys, they're hard for a non-expert to follow and easy to get into an inconsistent state. The wizard packages those…

Yes — the equivalent configuration is also reachable directly from the Settings / developer section, because under the hood the wizard simply writes to the same PlatformSettings store. The wizard exists because raw settings are complex and unguided: presented as a flat list of keys, they're hard for a non-expert to follow and easy to get into an inconsistent state. The wizard packages those same choices into an ordered, explained, validated sequence — asking the right questions in the right order and configuring the system coherently at the end. Power users can use Settings directly; everyone else gets the guided path.