It's very convincing that someone powerful targetted him for his anti-wallstreet policies and sought to catch him with a high paid prostitute. The weird part starts happening when they interview the madam and brothel hustlers who she hired, and find out tons of famous politicians and Wall st execs uses them... but noone else got brought down despite all the private investigations, wiretaps, and FBI investigations, except the one guy pissing off people in power.
Now in 2014 we're back down to nearly zero reputable prominent people in office calling out Wall st or political corruption. Except maybe the crazy fringe types like Rand Paul.
M: 10/10
You're basically saying "I don't care, he went to a prostitute of his own free will", which is no rational reason to discount the theory that they targeted him specifically, because if he hadn't done so, they'd have either found something else, or made something happen. The fact that they didn't have to, doesn't suggest they did not target him, while the fact that they also didn't out any of the tons of other people, suggests that there might be a reason for this particular person other than mere chance.
The leaks do state that metadata about the call, including that it was made between the parent and Twilio, would have been stored in a database, so theoretically the parent could be targeted for calling on that day "with a few clicks", as you say. News outlets have published theories based on the leaks under which this would happen:
http://www.theatlantic.com/politics/archive/2014/02/the-nsa-...
But they sound pretty hyperbolic to me. Note that according to the official procedures, the data is supposed to be destroyed immediately unless it "is reasonably believed to contain significant foreign intelligence information", etc.:
http://www.dni.gov/files/documents/Minimization%20Procedures...
and the NSA was/is certainly not supposed to intentionally go after this type of information. But to be fair, I might not have been so skeptical if the parent had only mentioned metadata.
The parent responded and brought up COINTELPRO. Yes, if something like COINTELPRO were happening now, then such fears would be warranted. I cannot rule that scenario out, but it's worth noting that the leaks make it significantly less likely, since the NSA would probably be involved in such a program (as it was in COINTELPRO), yet nothing of the sort came up in the leaks. I guess the proven ability of the government to keep misconduct secret in general means that it is rational to suspect that some kind of misconduct is happening somewhere, but I wouldn't say there's enough evidence to rationally specifically fear being targeted for contacting Congress.
They and another person also reiterated that the wording was "wouldn't be surprised" that something is happening, which is a more general standard than thinking it is actually likely to be happening. And I admit that even a small chance of it happening can still make it "scary" to call, since the repercussions if it were true could potentially be much larger than the benefits of calling; moreover, some of the people who might call may not be rational or well-informed but still should be entitled to call and state their views on what ought to be happening. Still, I do not think it's unreasonable to ask for evidence either.
[1] - http://investigations.nbcnews.com/_news/2014/01/06/22205443-...