Ben, thanks for chiming in above. Right on all counts I suppose. FWIW, I am at the moment on a cross country solo road trip visiting family and friends. By the time I get done, I will have driven almost 10,000 miles. Gonna find out which parts of North America are EV-ready and maybe which are not. This is right on the heels of returning from a trip to Italy, so I’ve been behind and haven’t caught up yet. My regrets.
Barry, in this forum, I don’t think there is anything such as “too many questions.” Keep asking them. There are people here with much better technical chops than me, but I’ll do my best to give my honest answers. I’m not much for fool’s gold and as a few will gladly volunteer, I am skeptical of claims that can’t be or aren’t grounded in some explicable engineering principle. I’m no golden spoon, but I will fork over my hard-earned money for something that convinces me, but I’ll also gladly save a buck or a thousand if something cheaper works for me. Anyway . . …
Wait, there’s a difference? 
But seriously, I don’t know what to tell you. I think some of the rabbit holes we fall into and follow are based on something we can see and hear side by side (speakers or components at a dealer, or even files vs. discs vs. vinyl), and might even be amenable to broad consensus. Others may be less obvious, less easily compared. Here, we know there are a variety of perceptions regarding the relative improvements of clocking. dCS have shared with us a lot of the technical design of their clocks, their basic working architecture, and how they respond to the addition of a reference clock that meets certain criteria.
I bought the Cybershaft primarily because everyone, especially over at that notorious opium den WBF (that’s just a joke), raved about it, the Cybershaft designer was very responsive and knowledgeable, the SRS did not have as much enthusiasm in the audiophile community, for some reason the Cybershaft seemed better made than the Mutec line, and because my Vivaldi Clock had a socket for it. It’s a lovely piece of equipment, its maker is a professional, and I am glad I did. I thought it improved the sound of my system. It was after that that James posted here the technical explanation of how the dCS clocks work and respond to reference clocking that I realized that something different from the Cybershaft might be even better. I came across an enthusiastic review of the SRS PERF10 (one which I also thought missed the mark on several key and comparison points), so I decided to give it a try. There were other atomic clocks to consider, including some by Antelope that are widely used in recording. There is also a super expensive UK marque whose name I have forgotten. But I decided to start with SRS. I never had the Cybershaft and the SRS in my system at the same time. So, I made no direct comparisons. But my wife and I both thought the system sounded better with the SRS. It certainly should have, if it was well designed and made, as it ticked the boxes that James articulated, and if it was something my system was capable of resolving.
I don’t recall exactly what caused me to take the GNSS turn in the rabbit warren—it might have been a review of the CH Precision clock—but I did. And once I did, it exposed me to an entirely new technology realm. As you said, a whole new hobby. 
Exploring GNSS-disciplined clocks, as the next best thing to a cesium clock, led me to Novus. And I am glad it did. Working with Bill and Sandy there, and being an unwitting part of their development of a new platform, one with audiophile benefits, was a delight.
Is the Kronos 1 better than the SRS? Objectively, based on its measurements, yes. Does it matter? 
Never compared the two side by side. My system sounds excellent, better than ever I believe, and that’s all I care about. And while neither the Kronos nor the PERF10 will win any beauty contest, especially in a dCS salon, the Kronos is the more attractive and less obtrusive of the two.
Could be. I don’t need to always have the next new/great thing. But once I get a burr under the saddle, I will ride it out. I firmly believe that technology will keep improving digital SQ. But I also believe it can plateau at times, and that the SOTA will remain very high quality for quite a while. In this case, I didn’t see much else out there that could offer a technically superior approach to improving the reference clocking within a budget that did not materially increase my risk of divorce.