Yes. Many people reply to Community threads quite frequently.
I can’t speak for anyone else, but while I have been tracking this topic, I had not replied to it, because I don’t have the answer to your question, and I already put as much time into looking for it as I was willing.
I don’t rely on Cloudflare’s automated feedback to evaluate my DMARC record content, so it only places your question in the realm of mild curiosity for me.
FWIW, my DMARC policies that are not hosted on Cloudflare DNS do not end in semicolons. The ones hosted on Cloudflare nameservers end in semicolons. All of them are working as expected and dmarcian’s DMARC Inspector does not indicate that any have errors.