Fractal is known for 2-3 things primarily: The quality of the models and effects, the frequency and impact of updates and the level of customer support. I think they have also traditionally been known for the high quality of the physical hardware, so lets say 4 main things.
If FM3 updates are not "good enough", it is because they do not uphold the standard that Fractal has set for itself in this area. Unfortunately, that standard is set with the flagship products, not the lower tier products.
When people think of the great updates that Fractal products and owners enjoy, they are thinking of the Axe-FX products that are traditionally $2000USD or more, not the lower tier products. Its not that the lower products have a lousy update experience, its just lousy compared to the flagship. Its not unreasonable for a consumer to think that Fractal is Fractal if they aren't told otherwise when they buy.
I don't know how Fractal could say it, and I'm not sure there is any way to say it in a way that works, but something along the lines of
"Our flagship Axe-FX products reflect the cutting edge of our research and innovation with a rapid update pace that Fractal is known for throughout the world. Some of the resulting innovations and improvements may appear in semi-annual updates for our mainstream consumer FM3/FM9 products when resources permit, though many will not. Our relentless commitment to industry-leading tone, quality, value and support are found throughout our products whether you are purchasing our flagship or our mainstream consumer products."
Like I said, I don't know how best to say that, or if it either can be said in a good way.
I own and enjoy an FM3. I try to make peace with the idea that it is not a traditional Fractal Audio product as much as it is product that "Features Fractal Audio Technology". I still think it packs tremendous value for $1000USD