Look, Arc isn’t doing this intentionally.
It makes no bloody sense, which is why even he wonder why the itch.io upload tool decides to do that anyway.
So, for future reference. If you can’t be arsed to use a file manager to extract the zip file, go to Patreon or Subscribestar and use the public release links.
It’s the same version that gets posted on here. Supporter release is the same as public just 3 days earlier.