On the contrary I think carna has outlined the hurdles and timelines from way back.
And I've never seen it as negative. He's just put forward his knowledge of the IT steps required and has questioned the info that Bpg put forward which went against his personal understanding.
Not everyone knows the in depth details of how projects operate for each venture.
Surely it's enlightening?
Maybe you just want him to say "I'm not sure what's going on but she'll be right"?