...welcome to webmasterworld
I did mention one of the reasons to avoid such mentions in my post above, and there are other forum-moderation-type reasons in the forum charter
[webmasterworld.com]. However, it's not just a matter of forum policy. The widely-available tools do not diagnose penalties accurately at all IMO, and they are primarily of use to those who already have a good understanding of penalties who want areas to explore. For the uninitiated, they can be totally misleading. I didn't find a huge amount of direct mentions on WebmasterWorld with a quick search, but those that I did highlight this point. For instance, are these pirate penalty
[webmasterworld.com] and -30 penalty
[webmasterworld.com] diagnoses accurate?
Most tools are using one of the third-party ranking databases (SearchMetrics, Semrush, Spyfu, etc.). It's a totally separate discussion, but these databases in themselves can't be taken at face value. They simply don't correlate to actual organic data. So, if you are assessing a site without access to any analytics or other data, then they might provide a decent starting point. If it's your own site, relying on these databases would be a crazy thing to do.
Diagnosing penalties is never straightforward, and we would be doing members a disservice if we suggested they could go to a "penalty checker" and obtain any real insight into their site's performance. For those that want to do so regardless, you'll find such tools with almost any reasonable Google search.