I don't even worry about it, to be honest. For my busiest forums, we come out near the top when searching for a handful of popular topics on Google, and that is what draws visitors to us. Like any busy forum, many of the threads turn out to be nonsensical in the grand scheme of things. The number of visitors we have certainly never has dropped.
Sucuri killed the business at one of my client's sites! It gave so many errors to visitors and even Google's page ranking that it drove her into retirement. I had custom-written a catalog system that tied to a third-party cart that worked well and she had her best years on that system. As I got out of coding and all the fancy languages and stuff went way over my head, she moved to Magento (mistake #1) and since it was already being hacked (using Magento is like having a giant "Kick Me!" sign taped to your back), the developers she used pushed her into Sucuri (BIG mistake #2). That company would rarely ever respond to support tickets, and there were hours if not an entire day that something would not be working due to Sucuri, as she lost business from being offline. That and it was sniffing all over our server, going into directories and throwing up all kinds of errors for sites that weren't even online anymore.... so just migrated to a new server and changed from Sucuri to CF to see if things settle down.