You're grasping at straws to be perfectly honest.
Freesync has less compatibility GPU wise than Gsync, so many will need a new GPU (Far more than will need a new GPU from Nvidia for their GPU to work)
You can't just chuck a 1.3 into your 1.2 monitor, so it's a moot point, you're buying a new monitor, no different than buying a gsync monitor.
To be honest, your "point" makes little sense really.
But logic isn't your strong suit, so I'll let you quit while you're already behind.
Actually, most Intel GPU's should be compatible as they have hardware needed to utilise adaptive sync monitors. All they need to do update their drivers. They already have the capability as they use dynamic refresh rates etc for power saving.
It was called Freesync because the license is free, any monitor manufacturer can use it. The Freesync name sort of stuck and AMD just ran with it, as any company with any sort of business sense would. It's not even an AMD tech, it's just a display port standard!!
People, and to be honest, mainly those that support Nvidia are making a big deal out of the fact that with freesync you still have to buy a new monitor etc. Just because it has free in the name? lol
AMD have nothing to do with the monitor side of things, the only thing they did was push for the specification from embedded display ports be added to desktop display ports. Since it is optional on the the display port 1.2a standard, they are also trying to persuade monitor manufacturers to use 1.2a connections early and not wait for version 1.3.
The added cost of $10 -$20 is simply the new display port board, some manufacturers wont even have this cost as they can update their monitors by firmware. I don't even know if this should be counted as a cost, I mean they are going to have to spend $10-$20 putting in a display port anyway.
Also, I don't know how much Gsync adds to the cost of the monitor and some people are working out the cost based on the Acer 4K Gsync monitor when compared to other monitors. Well, I don't think you can base it on this at all. I would say imagine how cheap the Acer 4 K monitor would be if it didn't have Gysnc??