Hi Eggs_n-Ham! Welcome.
The UU Forum is still active because many of us prefer it to the Discord Server site. However, the site uses old software. So, we put up with some quirks and shortcomings. Primarily, the site will sometimes truncate a posting if there is a symbol in the text that it doesn't like. Such as the symbol for the British Pound or for temperature degree.
So before you post something, whether a new thread or a comment, it's a good idea to copy it before you post. If it is shortened, then click the edit button and paste the entire text in the box. Check that there aren't any symbols or M-dashes or such. Then post the edit. It should be good.
Anyway, yes, the Forum is alive and operational. Welcome and enjoy.