So far I haven't read or heard about CF being part of horror stories like this one but apparently their support is incredibly slow, whether systemically neglected or over-encumbered. There was recently a Tell/Ask HN story about how they had taken days to repair a domain suddenly becoming unresolvable because of something relating to CF's own infrastructure. I have acquaintances who on two separate occasions, despite being on thousands-of-dollars-per-month terms with CF, have had support errands run for months without a single update on the support ticket.