This one is a super controversial topic within the keto/low carb space. Many gurus advocate for the "fat as a lever" approach in which you decrease dietary fat intake if the primary goal is to lose body fat. Their argument typically focuses on the belief that if you are eating dietary fat then your body is less likely to burn stored fat. This may be true in the context of extra dietary fat increasing total caloric intake but it falls short if calories are equated for. Once you become fat-adapted, your primary fuel source is fat; both stored and dietary. The last thing I would recommend doing is significantly minimizing your energy source by removing dietary fat. Less dietary fat may certainly have a place if the individual is doing little to no physical activity. However, if you're on this website I assume you have a certain degree of savagery within you and you are wanting to improve your optimal performance, not simply exist and be mediocre. If you are wanting to perform at a high level, you'll benefit from consuming a high percentage of quality dietary fat as that will be your primary source of energy. That said, it's incredibly important to make sure you are consuming an optimal intake of dietary protein and your total caloric intake is adjusted accordingly depending on the goal. You can get to an incredibly lean body fat percentage and build muscle with both protocols. I personally recommend doing so with enough energy to actually enjoy the process!