This is one of the classic, "cut the bullshit, show me the proof" things. You may be completely right but we don't know it, and even you don't know it. More detective work is needed. First gather enough evidence, then make it public.
A comparative teardown of the recalled and "new" units would be the bare minimum to show us,
1) where the original problem was,
2) that it's still there completely unfixed.
The fact that they are still in business is uninteresting.