Because in a lot of hiring processes the worth of the researchers is based on this streer cred. It’s a messed up system.

Even more messed up is that journals that do try to be more open about their procedures and that don’t try to make a profit are marginalized or in some cases even not indexed. For example, eLife no longer has an impact factor calculated because it’s experimenting with a publishing model that disincentivises profit and some other undesirable things in academic publishing.