It certainly benefits Cloudflare by making any patent troll think twice before suing them, but to a lesser extent, it also benefits the entire tech industry:

Cloudflare set an example that anyone with similar resources can follow.

And Cloudflare shared many of the results of their work, including an extensive prior art portfolio. This can be useful to anyone who gets sued for these and possibly similar patents.

I really hope more companies will follow Cloudflare's example.