That is understandable. Poser 12 is still unfinished, and is being released as "early access", but Rendo is doing many things SMS would never agree with because they didn't understand this market like Rendo does. It's heavily under construction, and I am already impressed with the huge rendering upgrades, supporting RTX even before the Autodesk giants did. After I upgraded my GPU to Ampere, I can no longer render in P11, so it's not even a choice anymore. But even without RTX, P12 was already miles faster in rendering speeds, thanks to the new Cycles 2 engine, and the even more amazing "adaptive sampling". I say amazing because it makes P11 rendering feel too slow and too noisy in comparison.
That is not to say everything is peachy. It is being updated every week, sometimes twice a week, quite a work in progress. But to tell you the truth, I haven't seen Poser getting this much development since 2016. That is quite something considering a while ago, Poser was left for dead for a few years. Rendo is not hiding the fact when they named the ads campaign the "Poser pulse is getting stronger". It was in pretty bad shape when they found it.
There is a lot to catch up to, and Poser 11 is no longer being developed. That alone was reason enough for me to switch. I was itching for new toys, and now I am getting them - in a regular basis. Some of my Python 3 scripts are using them under the hood - stuff that was never possible in P11. I guess I am one of these guys who need to see progress to keep going. And about that, Rendo is delivering. Makes me a happy camper.