Actually that spy review podcast articulated something very important about Garak's characters that people often miss, which is that Garak doesn't lie directly as much as he claims, and when he does it is often either
1) obvious on its face (most of his lies about his exile, like the tax evasion story) or
2) obvious if you know him (the changeling impersonating Julian knew Garak well enough to deduce he was lying about the transmission because of extra information Garak provided to explain himself, technically his stories in the wire because his use of names reveals it)
He more often prunes the truth to make what he's saying more appealing to whoever he's talking to and isn't necessarily subtle about it (the way he talks to Worf to get him to continue investigating in In Purgatory's Shadow is really blatant and Worf calls him on it, but it's also effective at appealing to him so he does what Garak wants anyway). Or he says the truth in such a ridiculous way that you feel stupid for consodering it (the outcast spy comment). Or he omits some facts but uses others.
