Brave browser identifies website as "insecure" without explanation

Using Brave Version 1.47.171 Chromium: 109.0.5414.87 (Official Build) (64-bit)
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Website in question is https://loehoafaq.com.

No issues identified when clicking on the warning icon.

Now, I know this is caused by the inclusion of a non-https link in the page. The problem is that there IS NO https version of the site (Florida statutes), likely because there’s no way to submit information other than search strings on the site.

http://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=0700-0799/0720/0720.html

Other browsers (Chrome, Firefox, Opera, Edge) identify the site as secure. Brave’s approach misleads users into thinking the site is a threat. Perhaps adding an explanation of the warning in such cases would accomplish what you intend without rattling users for no good reason? Or, you could eliminate this check and warn the user when they visit a linked site that doesn’t provide SSL but contains a form.

Possible something MITM? This is what I see here regarding the cert Does it match up?

I see this.

Interestingly, my wife gets no errors with Brave on her laptop. She’s also running Brave Version 1.47.171 Chromium: 109.0.5414.87 (Official Build) (64-bit)

Incidentally, the MITM possibility caught my attention. I use a wired ethernet connection to my own router running ASUSwrt-Merlin with regularly updated firmware and my system is not configured to use proxy server. I don’t see how that could be the problem.