Please tell me this click_to_play can be completely disabled in about:config. The PDF thing is going to be a nightmare for clients of mine who have researchers

Please tell me this click_to_play can be completely disabled in about:config. The PDF thing is going to be a nightmare for clients of mine who have researchers going to different university, research center and journal sites (repositories) for papers and articles. Yeah, a user can disable the check for certain sites, but when you have hundreds of such repositories...you get the picture.