Bold statement; possibly true if you think 3D is just gpu rendering, not working with scenes with large amounts of polygons or heavy data or compute workloads
Should probably wait for the review and not the YouTube or gamer reviews before making sweeping statements. We all know what those reviews will be; rendering tiny non production scenes which would fit it the memory of a toaster, because YouTubers need to get the video out asap and can't wait for a benchmark that takes more than 15 min.
Or, to put it in a workflow context, my workstation has an A5000 16GB ($1500) which frequently runs out of memory. On a Mac studio this wouldn't happen. From a productivity view, (not just watching the progress bar as something renders), the Mac Studio would beat the Nvidia card hands down. As a side note it could easily able to sim and render things that the Nvidia card cannot.
In judging whether something is good for 3D, I would argue that responsiveness and startup speed are far more important than waiting for final frames (the last 20% takes 90% of the time).
I'm going to boldly predict that Mac studio will be significantly more responsive and have a better start up time, making it superior for lookdev and artist facing workflows than equivalent Nvidia equipped workstations. I feel this is a safe bet as the M1 Max already does this when doing lookdev in redshift, but let's wait for the Anandtech deep dive and see whose foolish prediction is correct
From the sounds of it 3.2 will be a step forward, but probably just the start of really optimising things. It seems that we're probably a year off decently optimised software, although there are some pretty nice gains already (Houdini was up to 30% faster going from Rosetta to Apple Silicon, and from my testing the Rosetta version was already more responsive than the Intel version - perhaps that speaks to how bad the iMac Pro AMD drivers were more than anything though).