No, they don't, but the article covers two different topics: notarizing apps for macOS desktop (for which you have to pay the developer fee, where previously there was no need to), and distributing apps through the iOS app store (for which you have to pay the developer fee and lose creative control). Presumably the app store is relevant because there is no other way to distribute apps for iOS.
If you try to notarize an app, you chase links for a while untyil you get to https://help.apple.com/xcode/mac/current/#/devac02c5ab8, and then to get a Developer ID, you chase links for a while until you get to https://developer.apple.com/support/purchase-activation/
If it's free, it's pretty well hidden, like US tax prep companies' legally mandated "Free File".
But there is still a slight overcharge in work comparing to 64 bits only platform. So Apple, one of the richest company in the world, decided to cut the cost, once again.
I came to believe that every decision apple is making regarding its products, hardwares and softwares is about cutting costs at every corner and maximizing profit.
Switch to in house ARM processor from standard Intel ? No need to pay intel anymore...
These new keyboards ? Well, may be it's about slim design but, having be able to use them for 3 years and having had to remove some of the keys occasionally and comparing them with the ones of the macbook pro 2015 i bought on ebay 2 month ago (I hade to convert the Querty keyboard to an azerty keyboard by switching some of the keys), I can say the quality of the material and the cost of manufacturing of these 2 keyboard are not the same.
Additionally, don't you have to sign a contract as a developer to use the notarization service?
Today it is a layer on top. But my hope is that Apple comes to peace with non-AppStore distribution, with automated notarization and waiving of the $100 fee for open source, students, etc.
Mac OS X was such a joyous platform to learn to program on. But macOS is throwing up more and more obstacles to native apps. When you squeeze a balloon, the air goes to the other thing.