Has anyone taught you, that it's rude to discuss such things about other people? The fact that the mod is available for free to download for everyone, doesn't mean that maintaining and working on future updates is. I wonder how would you feel, if other people would discuss your salary publicly online and if the work you put into whatever you are doing is worth something or not?
Supporters are what keeps the project alive and well, without all of the amazing people who have been supporting me in the past and are supporting me actively none of what I'm working on would be possible (my time spent on making it which is over 10000 hours easily at this point, all the assets, all the licenses, all the maintenance costs for server hosting, website etc) and it's not all about update frequency, but about actual content and features the updates bring, that's what is important. You don't go to a restaurant and don't demand a 3 course meal to be served equally fast as a burger in a fast food place. Some updates are more frequent, others take longer. A16 to A19 update for me took two years to develop and was a fraction of complexity compared to the changes coming with next 2.7 update.
All your messages just sound like backseat modding. What makes you think, that your opinion is more important than my opinion or anyone else? Feedback is important and I take it seriously, but a single persons feedback will never be more significant than the overall feedback of the whole community who enjoy UL for the reasons they do. This just sounds super entitled from your end feeling the sole responsibility and right to decide what's worth my focus and time and what isn't. Be patient, the update will come. I understand the frustration of waiting for so long, but all good things take time. Do something else in the meantime and enjoy UL when the update arrives or play the older version in the meantime for a20.7. Mod is not abandoned, I communicate on UL's discord pretty much daily, it's not my obligation to look after people, who can't do just a bit of research and more digging around and saying things are abandoned without checking the facts first.
I heard stories, it's very sad to hear that some long time modder deciding to quit what they are doing because of feeling discouraged to do more and just feeling unappreciated. It's probably more common than we might think, many just don't talk about it and less popular mod authors just move on with something else and never come back. 7 Days is a fantastic game and I am super appreciative to TFP to allow us work on all these crazy mods and sometimes change the game so drastically, offering people who enjoy the game a different perspective on how it could play and I think there's huge potential in what could be changed in the future.