Models, especially merged models, can be very, very large. It requires more than 5+ GB of video memory, which a lot of computers will not have.
So, we've addressed the software problem that kept this model from being rendered in the viewer, but many people will still not have sufficiently powerful hardware to display merged models.
The key here is that the real long-term solution to this particular problem is the Federation / Next UI. It's unrealistic to expect 35 different models with 5+ GB of geometry all to be loaded up at once in a SaaS application.