TekTopia does not change natural villager generation, it simply modifies it.

Structure changes

All naturally generated villages will contain a Town Hall and several other structure tokens. A player has the option to take up residence in one of these villages or to remove the tokens to start their own village from scratch.

If a Storage building is generated it will spawn with a chest containing some loot for the player to help with the village building process.

vanilla Villager Changes

All naturally generated Villagers will be turned into TekTopia Villagers.

Each Villager will become a TekTopia villager based off a random dice roll: