I don't understand if this is a suggestion to a particular person and you're on the wrong channel or if it's something general for Itch.
If you put it in a general way, this is actually how it should work, you create one page per game, which only shows the files of the latest version. The vast majority of games on Itch.io work like this.
The problem is that Itch does not force everyone to do that and some developers create a page for each update, something that is annoying for users and that many of us consider bad practice, but I understand that it is not prohibited and in the end It depends on each developer.