Hi Skevo , I just want to say that I have tested and freelarum can proxy via Cloudflare.
Configure DNS as instructed, and once the forum is up and running, set SSL to Full + enable proxy for subdomains , now you can take advantage of these additional benefits that cloudflare brings.
So far my forum has not had any problems. I think we can include it in the tutorial as an extra option ( cloudflare has helped me a lot about ping since freelarum is not expanding to Asia yet )