Are cheap Amazon rotary tools like Hardell or Fanttik a real substitute for a Dremel?

Reviewers are split. r/modelmakers and r/Kitbash users report the Hardell and Fanttik F2 work well for light plastic, miniatures, and 3D-print cleanup, but r/Tools users repeatedly warn that low-voltage USB-charged units lack the torque for metal or hardwood. Treat them as task-specific tools, not Dremel replacements.