why the journalist was carrying out a sting against Brooks Newmark. He said it was based on rumours he had heard from young Tory activists. Maybe he is lying and he was casting a wider net for more senior Tories. However Guido Fawkes is a right wing blog, it seems plausible that it is not a general anti-Tory plot (as Roy Greenslade originally thought). As a journalist, at the very least I would expect that he would be hoping that he wasn't wasting his time and that he would get a good story out of it. That's his job and nobody likes to waste their time working on something that turns out to be fruitless.
Whether that motivation translated in practice to a specific objective to get a c0ck sh0t is an entirely different matter. Unless Newmark has form for that, it would seem a fairly specific objective with a high risk of wasted effort. If you think the journalist's motivation setting out was to get the picture, I would say that's a big leap.
How that motivation translated into a specific escalation of the communications and to what extent he lured Newmark into sending the photograph is another matter. So far, we only have the journalist's account so any assumptions you might make as to how the motivation translated into behaviour are not only speculation but they go against the available account that has not been denied by Newmark. In that account, Newmark initiated the private discussions and there is no suggestion in the report that the journalist asked him to send a picture of his penis. Newmark has not said the journalist asked him to send the picture but you are assuming he did. All specific details of the escalation from tweet to picture has not been published by the overall account of it that was published has not been denied.
Ultimately, in my view, none of this matters. It clearly does for you and you have filled in gaps in the detail to conclude that Newmark's behaviour was not exploitative but the journalist was. So far so typical of assuming the best of men's behaviour.
As I have said before, I don't care about the motivation of the journalist, I care about the behaviour of the Cabinet Office minister. At worst, he abused his power and attempted to abuse a young woman and at best, he abused his power. Either way, male entitlement that has a detrimental impact on women.
Insofar as it relates to the sting operation against Newmark, I don't care about the journalist and, from the information currently available, I don't think he was unethical.