Topaz has improved insofar as it isn't as heavy handed as it used to be. Still too heavy-handed, but it can be useful. I only use it for trying to rescue pictures that are a bit NQR - if I've got everything right in-camera and/or in PhotoLab, Topaz serves no purpose.
About half the time, it makes a NQR image worse. But the other half of the time, especially if you back the setting off a bit, it does good things I can't do any other way with any sensible amount of time and effort.
One thing that REALLY bugs me is that they STILL haven't addressed their hopeless inability to preserve EXIF data. Really primitive. It has become the merest routine for me to have to manually repair the EXIF data on a Topaz-processed image with ExiftoolGUI. It's an annoying extra step, and no other modern software needs it, only Topaz.
But sometimes it is the best tool for the task, so I put up with it.