I understand that, sure, but they would have had a lot more support for this editor if it was for Linux. Now I barely ever hear about it at all in the news.
Hot take: but I think it makes sense. If anyone would pay for a closed source editor it's mac developers hence it made sense to chose that as your first platform to support, especially considering that they are a small startup. I don't use mac either but I think they made the right choice from a business standpoint when they were still closed source.