Your best bet is probably to start some low carb/ keto threads and see what kind of participation they get- new boards are usually started because there is evidence of enough participation to support them.
As a person that eats low carb/ whole30 I’d be interested for sure.
I would 2nd the request. While I’m not currently doing a true no carb diet, I will be going to back to it again and would like to have a go-to location for ideas. I wasn’t aware there was one on the other place, Weezie is giving some good advice though. Let’s see what @hungryonion has to say.
I’m certainly up for more LC threads or even a dedicated board, although in my experience there isn’t a ton of interest in low carb on foodie websites in general. There are dedicated low carb forums that get more traffic but I find many of the posters there are more focused on weight loss at all costs rather than celebrating the foods available to them on a low carb diet.
I just repurposed the Kosher/ Special Diets board to be Other Diets board, including low carb/ zero carb. (Kosher traffic was low) So please feel free to start low carb/ zero carb discussions there.