Yep, I've made similar arrangements. After helping friends after the death of family members it became obvious that I needed to put something in place.
I've been 'recruited' for positions where I was the hiring manager. They must've seen a posting online since we never hired recruiters that I was aware of. I'd expect they'd be embarrassed when that was pointed out to them along with 'we're not contracted with you' but frankly two out of the three times it's happened they then went on to tell me about how many great candidates they had for me.
I agree to a large extent. I've been asked for 'a non-intrusive penetration test'... Uh, what? Then you hammer it out and they're looking for what we call a 'vulnerability assessment'. The pen-test without the pen- phase.
There's a large number of people running those tools and doing exactly as you describe. I call them, 'the competition'. They bid low and ship a canned report with little to no analysis or follow-up. I highly recommend everyone scan themselves regularly. None of the tools you mentioned are too scary. I do tend to find the severity ratings to be out of whack with the real world impacts a lot of times, so if you see a bunch of red in the report don't panic. Read the text and figure out what it means to your network. The Metasploit Framework has a bit of a learning curve, but nothing too daunting and really it's not necessary for a maintenance scan. You can always invest in a licensed version if the Framework scares you.
Those tools don't provide meaningful coverage of web applications but they would give you a decent idea of the security posture of your network perimeter.
Many situations require the disinterested third party to perform the assessment or audit though. Sometimes customers/partners want to see your last report if you're dealing B2B and then there are the compliance requirements (PCI, health or personal information).
The one thing about that report that really bothered me was the remediation price tags. I know a lot of companies do similar things but we never offer remediation services since it would put us in a conflict of interest. I turn down security product installs regularly on our assessment and penetration testing customers because I don't want us in a position where we're auditing our own work. It's a point of contention sometimes but its an audit independence requirement and I won't budge on the issue.
Usually when we see stuff like that it's because there's a device doing some traffic control (load balancer, proxy, WAF, whatever) for the web server that runs some version of Linux. So you'll get a report that says IIS on Redhat or IIS and Apache both running on port 80.
Since the automated scanners are... stupid, they'll then gleefully go off and check for Linux vulnerabilities too.
The guys doing the analysis should of course catch all that, but if no one is doing any analysis and just parroting what the tools tell them, it ends up in the report.