This clearly is a podcast for quite technical people. His guests most of the time (like, almost always, except the cases he invites somebody because he was on a JRE) are people notable for their technical contributions. They discuss some very technical stuff the guest is known for and is literally the best possible person to teach us about. Instead he skips technical questions almost completely and opts for "what's the meaning of life"?! Come on!
When the discussion happens to be pretty technical (mostly, because the guest himself is more of a no-nonsense type of guy) it sometimes feels like some basic background necessary to understand the further explanation was skipped. I assume that it's my fault, since this is supposed to be common knowledge and host doesn't want to interrupt the guests to clarify such nonsense. And later on I understand, that Lex didn't understand that part either, but didn't make any attempts to clarify. Isn't that the point of an interview?..
I wouldn't want to offend him, but often I think "oh, such a waste!" listening to his podcasts. So much stuff is left unanswered.
So, yeah. Nice guy, but no so good interviewer. And way too romantic.