Not with Kerbal Space Program and Minecraft I won't
Both are poorly threaded game engines that max 1-2 cores, while requiring not a vast amount of GPU effort, and both struggle for fps when modded. But the quality of the coding doesn't change the fact that I enjoy playing them, so I need to plan my hardware accordingly. There's also things like responsiveness in Manga Studio when using a big brush and heavy smoothing - I can't even imagine that being threaded.
TLDR, the gap between my 4ghz XFR and a 5ghz 8700k seems very wide right now.
Don't get me wrong, Ryzen was an upgrade for other things; Cities Skylines loves Ryzen @ 3.7 far more than a 2500k @ 4.5. Ark Survival and Subnautica both seem to prefer it as well, although as you say, the GPU limits both of these (though both play perfectly fine to my eyes). But these are about the limits of my gaming interests, and none of them would be thriving on a 1800x while challenging an 8700k, so my hardware change next month is really down to what Ryzen 2xxx can deliver that closes that single-thread gap. If that's mostly "nothing", then I have to look to Intel, with their higher prices, new socket every time, crappy TIM, mandatory delidding and dodgy business practises