We didn’t know it at the time, but 10.14 was and still is the last stable and usable release of the Mac OS, for the time being at least.
Catalina’s bombarding the user with notifications was reminiscent of Windows Vista-style, together with reliability and usability issues. This week’s “BS” announcement subjects the user to additional “chrome”, moves windows into floating pallets, and turns up the transparency dial all the way to 11, macOS 11.
For those unwilling to suffer the transition until Apple dials back down the interface Mojave is the stable, safe choice. I find this incredibly and increasingly disappointing. I need the “it just works” dependability, which is why I’m using Apple products to begin with. “It kind of works, now and again” doesn’t have the same tone or the same impact.