I try to be succinct
With apologies to the original poster for hijacking the thread:
While all the "cons" sound REALLY scary to the average person looking for a website, they are not absolutes, but "could happens" and similar bullet points could be assigned to ANY product or service offered.
WP code gets better and better all the time. I've been working with Wordpress since it's inception (2003) and except for a few isolated incidents, haven't had any hacker issues or ANY issues for that matter.
Why? Because a good designer educates themselves so that their clients can feel safe and educate their clients on how they can keep their sites running safely and correctly.
Much like a car mechanic or a hair-dresser or many other service providers.