I don’t think it is. You need to go on their GitHub to see that there is some development and to get last releases from march : https://github.com/greenshot/greenshot/releases

Yet I prefer ShareX

I believe most people would have seen that it has been post twice and reacted only with the first one they saw or the one with most reactions. Beside I guess the post with most comments could have been more promoted when using active / hot sort on home.