You’d be surprised to read the statistics about how poorly ECT works, and how little they understand about how to use it a treatment.
Totally different ballparks. Well-established results vs. very little formal research.
Have you had ECT, or do you know anyone who has? It's a last resort for horrible depression and not much else. It has huge risks, and while it does often make these people's lives manageable, it shouldn't be in the same discussion as a medication that's been out of discussion for political reasons.
shivers at the thought of ECT
Also https://en.wikipedia.org/wiki/Insulin_shock_therapy which used hypoglycaemic shocks rather than seizures.
As for TCMS? It works- if you can find a place that's not a farm.
They ended their life a few years afterwards.
So no, ”very often works on depression” is not a characterization I would use.
I'm (genuinely) sorry about your friend, and I don't deny that it's worth sharing these anecdotes. But a single anecdote comes nowhere near refuting the claim that ECT very often works on depression.
The current state of scientific knowledge seems to be that it does very often "work", at least as a fast-acting short-term treatment for very severe depression.