I also found it ridiculous. Turns out, you can hide bot posts in your account settings if you login into the web version of your instance (vger doesn't display the option for example).
The job boards are nice but I feel the remote-only boards are still super niche. I've had more success with a plain Google query that limits its results to some HR SaaS tool.
For example: "Javascript remote site:jobvite.com" then filter for last 7 days.
Of course that moves the goalpost to knowing which domains are a good fit. But that's super dependent on your region and of course not all platforms follow this url pattern.
I also found it ridiculous. Turns out, you can hide bot posts in your account settings if you login into the web version of your instance (vger doesn't display the option for example).