What century are you telling your lies from? First of all, the only new Macs you could possibly be referring to are the Mac Mini or the new Mac Pro and if you are connecting them to a non-Mac Monitor, you need only one of two possible adaptors for the past five years. . . either MiniDisplayPort to SVGA or MiniDisplayPort to DVI depending on what monitor you want to connect. That's it. The Macs that come without built-in Monitors ship with the two adaptors included. So there's another lie.
Macs shipped in the last decade without monitors, the Mac Pros, came with video cards that had DVI, SVGA, and standard VGA out, and used industry standard cables as well as Apple's own Video cable to drive their own monitors, supplying power, USB, and Firewire. . . but since it also provided standard video out, you lie again. What Macs are you talking about that needed "MacDongles?" I'm waiting with bated breath for your answer, Svartalfiar.
Even twenty years ago when Apple required some specific adaptors, they usually SHIPPED the adaptors with the Macs. So again, you don't seem know what you are talking through your hat about on modern Apple products. You are spreading lying FUD.
The Mac will auto detect the best resolution the monitor is designed for and adjust best color settings for that model. So you are LYING through your teeth. They also work if you want to add a second monitor to an iMac or Macbook Air or Pro. So exactly WHAT are you blithering about?
Oh, and if someone does need a new video adaptor because it has somehow failed, both adaptors are only $29 each. . . not $40-$50 as you exaggerated, showing again, you don't know what you are talking about.
May I suggest you stop doing any work at all on Macs? You are not qualified to do it at all. By the way, I have only been in the business of supporting both Windows and Macs for over 35 years. Don't try to blow smoke at me.
Why do you anti-Apple trolls have to lie? SHEESH!