I don't think that's an accurate way of saying it, and that a better way is that "Solvespace doesn't have tools to generate fillets and chamfers. The developers have shown some limited examples, but adding full-featured tools would be very difficult."

https://github.com/solvespace/solvespace/issues/149

https://github.com/solvespace/solvespace/issues/453

https://github.com/solvespace/solvespace/issues/577

edit: dang, got ninja'd by one of the devs in the cited threads!