If you are only doing logo design you can overlap things as long as it looks good enough to the end user. Booleans may be a good way to go for something like that. You may want to look into Box Cutter and HardOps packages and see if that style of modeling suits you. But if a 3D model is going to be viewed from other angles, textured, shading, material setups, getting a sub-div modifier, etc…… then topology is going to be a great asset.
Even with HardOps and Box Cutter you benefit greatly from understanding good topology.
