Yes, that's the issue.
Seems strange to me. Especially since the ads are only shown while editing that plugin settings only, not in the entire admin panel.
Since the plugin:
-Only shows ads while editing that plugin settings, not in the entire admin panel.
-Does not show any ads or links on my public site.
-Does not collect any personal information (As the privacy statement states)
Than I really don't see what is the big problem here. And to tell you the truth, I don't see a reason for people to opt-out.
I would suggest to have a clearer explanation about it while installing and maybe a statement in the plugin description page so people will know about it before downloading. And make sure to list things that SPSN does and does not do.
So on plugin description page have:
Since this plugin is free of charge, the developer is participating in SPSN network (Include link to SPSN) in order to help him offset costs of developing and updating the plugin.
*The SPSN network does:
-Only shows ads while editing that plugin settings, not in the entire admin panel.
*The SPSN network does NOT:
-Does not show any ads or links on public site.
-Does not collect any personal information
Good luck and thank you for providing great plugins.