I am not sure what kind of ordering are you talking about there, but yes, I would like to see posts in newest-to-oldest order, or at least have a sorting button that can do this.
that one also has some kind of upvoting mechanism on top of being ordered by newest first
Go to page 2 and higher, to see the lessening effect of the upvotes. I only cited that board, because the thread you posted was a thread about games. The board you posted this question, https://itch.io/board/580406/ideas-feedback is sorted by date of last post. Newest on top.
It does not matter if we are talking about boards or threads or topics or messages, it would be cool if I could set a default ordering (newest-to-oldest, or oldest-to-neweset) that is applied to everything, regardless of votes and everything. When I open any page, I would like to see the newest contents without clicking on "last page" and/or scrolling through many thing that I already saw.
Yes, that's how it works on any forum. Topics are ordered from newest to oldest (weighted by upvotes where enabled). Posts inside a topic are ordered from oldest to newest, so you have to check the last page to see what was said recently. That way you can see at a glance which conversations have recent activity, then read each conversation in order.