Think mine is stainless steel as it's for induction hobs, bottom part definitely is. I didn't like the funnel over cup but i can see it has a cleanup advantage.
I had a Nespresso pod thing for a couple years, tried all the coffee from Regent st flagship store, i reckon mokapot is comparable with good coffee. Coffee shops have the advantage, 250k machines, good coffee, ideal cups, nice surroundings