Pretty much all of those apply. Each model adds a lot of high-skilled overhead. We prefer to have fewer excellent models than many mediocre ones.
As our models matured, we are able to see success in more market conditions even with just long signals.
Additionally, the short-selling model just wasn’t very popular. It’s complex and limited enough (by exchanges), that it just never received the customer attention the long models do.
And this is speculation, but it seems that since most of our customer base is “pro crypto,” there the sentiment is that we want to see crypto succeed. We want growth. Even though shorting is an excellent tool from a trader’s perspective, it can also bring a negative connotation.