If this is not your position, can you clarify what you think scientific publishing should look like?
> because it distracts from the job that they are there for.
What is the “job scientific papers are there for”, if not sharing knowledge with other scientists and the people of the world?
As for your silly garbage truck / tank analogy: instead of these, we have buses, which work much better for the task.
Journals made a lot of sense before the age of the internet, when they actually did have to do a lot of work to coordinate the activity of physically collecting research papers, mailing them for reviews, paying dedicated people for typesetting and so on. Although the cost of all of this has almost vanished now that tools for editing are so accessible and delivery costs are inexistent, publishers still charge ridiculous sums for papers produced mostly from public money simply because of their prestige.
The same is not true for releasing papers. Government-funded research is done for the public good and its purpose is consumption. Releasing it furthers that purpose. Second, releasing it to public shouldn't incur significant additional cost.
Your second point is null, since the filtering job is 100% free (journal editors themselves do little filtering, whenever they are in doubt they forward the job to zero-paid reviewers).
Also, isn't it true that a lot (or most) of the peer review is done on a volunteer basis?
Can you demand a lift in a garbage truck? or in a tank? both of these things are provided for local or central government. why not? because it distracts from the job that they are there for. The same can be said for research (and source code). It takes time, effort and money to publish and peer review research. If journals can't make money providing access to the research who is going to pay for it?
Also there is currently a lot of BAD research out there. Domain experts don't have time to review all of it. Journals with prestigious names act as filters and as sort of priority queues for where you should look first.