I think people are missing the point of this piece. The purpose of this article is to demonstrate that Windows 10 on ARM is competitive with other popular devices in this category running Intel silicon -- obviously Windows 10 on ARM-based devices aren't going to be running heavy workloads just yet. And it is also obvious that should Apple enter this game with its A-series chips, it will have the same performance advantage as its smartphones currently do over the ARM-based competition.
What people should be impressed with, as pointed out in other linked articles, is that the Galaxy Book S does deliver similar performance to the Intel-based competition, but with much higher performance-per-watt. The Snapdragon 8cx is is also a 7 W part the Intel Core i5-8210Y found in the MacBook. Yet, with a smaller battery than the MacBook Air, delivers well over 20 hours of batter life compared to the MacBook's 13 hours of battery life. I haven't looked at this yet as I have had some issues running 3D Mark on the Galaxy Book S, but it also offers almost twice the graphics performance of the Intel iGPU in the MacBook Air as well. The Galaxy Book S is also thinner, lighter, more compact and features 4G LTE connectivity built in is as standard, all for around US$100 less than the MacBook Air.
I have previously run a cross-platform test (Geekbench 5) that ran on the MacBook Air natively in macOS and was linked in this article. That also found that the MacBook Air was outpaced by the Galaxy Book S. One or two comments indicated an interest in seeing its real-world performance. The best tool on hand for this sort of comparison right now is PC Mark 10 and its Application test.
Given that the Air can support Windows 10 natively, this is as close as we are going to get to an objective comparison of the real-world performance of these devices and as fair as we can get at this time. As stated in the article, the test assesses performance of Word, Excel, PowerPoint and Edge. These were not my selections -- just what the test offers.
As for driver optimization issues in running Windows on a Mac, they typically don't affect the key hardware - CPU, RAM, motherboard and storage. Windows update, updates these with the optimal drivers just as it would any PC, blind to the fact that it is a MacBook and updates it accordingly. The supplied drivers from Apple are for various other bits and pieces like ensuring its wireless keyboards/mice work etc. In my previous experience running Windows on Bootcamp on comparable PC hardware is that the Mac has outperformed the PC counterpart.
As a platform agnostic technology lover, I want to see new technology like Windows on ARM succeed. Not fail. Perhaps some of you would be less offended if I had simply titled the article "Intel Core i5-8210Y finishes last against Snapdragon 8cx and Microsoft SQ1"?