Poser is not the only program claimed not to be ready for RTX, but things are slowly changing. DS 4.12 claims to support RTX, and Reallusion CC3 and iClone 7 are working to have it incorporated. Octane 4 already supported it on release date. In a way, RTX seems to be an investment in the future, since things seem to be going that way. I had my doubts in the beginning because I thought people wouldn't like to pick RTX because it only works with nVidia cards, but the adoption seems to be going well, and with enthusiasm. Even AMD seems to be implementing their own version of RTX that still can't compete in the same level, but what matters is the fact that they are trying.
I actually thought something like Vulcan would become the new standard because it's platform and brand independent, but then we remember that it cannot do the same kinds of things RTX brings to the table. Real-time raytracing has always been the holy grail of 3D graphics. There is no argument about it. RTX cards also bring a new kind of hardware accelerated "Tensor cores" that can speed up artificial intelligence to levels never seen before, and even considered impossible for decades. In this day and age, this is also a game-changer. Maybe not for gamers, but instead for computer scientists like me. AI systems are already changing the way we live and work, even if most people haven't realized it yet.