No Dominance Results From In-Front Walking Your Dog

Where there is otherwise good advice, there is also a lot of room for nonsense online.
Your dog is not going to 'assume leadership', is not going to become 'dominant', will not think it is your 'pack leader' by you allowing them to walk in front of you.
However ....... Yeah, there's always that.
All those things above assume you have obedience trained your dog. Your dog knows how to walk on a short loose leash. Your dog knows how to heel.
Take a 6 minute walk through a city park with Charlie-Belle and I, with her not only walking in front, but doing it on a 20 foot leash.