I tend to agree. Medication can be helpfull, but in a lot of cases just in the short run. For a lot of AD's research doesn't really understand yet how they work exactly, just that they sometimes do. Also there are a lot of interindividual differences within the (side)effects of a specific AD. Regarding ADs, they should not be addictive on a physical level as opposed to anti anxiety pills (benzodiazepines), which means there shouldn't be any physical withdrawal effects when you stop using them. But on a psychological level they can become addictive (thinking you need medication to feel better). I think of ADs as a possible push in the back that can lessen some of the depressive symptoms. The effects of ADs can be described as being able to see things more relatively. With anti-anxiety meds, I tend to advice to stop them because they really could hinder progression in therapy.
Psychological flexibility, as in leaving thoughts and feelings for what they are and act upon one's personal values, is in itself one of the most valuable things a human can learn. That doesn't mean that thoughts and feelings are irrelevant though (like feeling fear when there is actual danger). But the more you try to avoid negative thoughts and feelings, by drinking, ruminating, trying to think positive, self medicating, social avoidance, compulsions,... the higher the risk of feeling stuck.
Problem is that in today's society everyone should feel happy, happiness is being seen as the normal state of mind, which it really isn't. Positive and negative emotions are part of life and under influence of many many external factors. So to try to control it is fighting a losing battle. The only thing you can really rely on and in my opinion is key in therapy is your behavior and what you're trying to avoid while doing it. In a lot of cases depression is caused by avoidant behavior, sometimes it's obvious what one tries to avoid, sometimes it's not. This is where therapy comes in.