Cloudflare is the SSL/TLS endpoint between you and the application.
When you use Cloudflare, data is encrypted between a client and Cloudflare (using 'their' SSL cert), they unencrypt it and inspect so they can process it, caching etc, then it' can be encrypted between Cloudflare and the backend using your own backend certificate.
So Cloudflare can see everything, its required for them to do what they do
I feel like its a green flag, seeing that cartoon jackal-girl pop up with the magnifying glass for a second.
It's surely not universally the case but it's a positive sign to me.