Yes, I anecdotally have had two different recruiters at different companies on the phone before interviews tell me they definitely would follow up after the interviews with feedback and in one case I got a form letter email and no response to a reply email I made (asking about that feedback they had "definitely" promised me) and the other time no response at all but checking their portal and showing the thing was closed (again after promising me they always give feedback). It's so very weird and doesn't give me a lot of confidence right now that recruiters aren't just wasting my time.