As long as those 4 cores and 8 threads don't get saturated (reach 100% utilization) that will remain true.

As games scale to more threads over the years and they become heavier in terms of game logic, physics and draw calling then the advantage (in those newer games) will go to the 1800x.

Its very simple really, as long as the 7700k isn't saturated (or not much) it will be faster than the 1800x in those games, in games that go above the 7700k's total multi threaded resources the 1800x will continue to deliver the same "mediocre" but stable performance while the 7700k will crash out horrible.

This is also true for today's CPU's 9900k vs 3900x and 3950x. The upside of the 9900k is that consoles are locked in for 8 AMD slower cores, so it being the fastest cores around means it will age nicely as long as consoles are not refreshed with new cpu's, the 7700k unfortunately was one of the worst buys in recent years, not as good in terms of timing and performance uplift compared to the 6700k and lasted to little time and got smashed by the 8700k, but if you needed a cpu then then it was the best choice at the time, just bad timing to purchase, better to wait those 9 months and get the 8700k but its hard to predict these things in advance right?