It also would affect business relationships which is something every employment contract I’ve ever signed has stated is something which is a violation of my employment terms.
So, to pile on a little: yes, the parent is right in a lot of cases, there are exceptions, but of 12 audits maybe 10 were essentially Nessus version checks. This was needed mostly for rubber stamping.
Better ways to say the same thing without undermining people's trust in the whole idea: There are lots of scammy security audit companies, Confluence should make sure to engage a good quality ones. Companies should invest in serious pen tests rather than just org compliance for security. Here are companies that actually did a good job...
Unless the goal is to bury the whole idea under a list of issues with bad actors and make sure nobody knows there are alternatives?