Linode is a cost effective solution comparing to AWS. But the security and DDoS issues could raise eyebrows and bring confidence issues with customers. This has happened even after they posted about enhanced DDoS mitigation strategies like procuring more bandwidth etc.
If you look at the history of Linode discussions under HN, most of them were related to DDoS attacks and service downtimes. https://news.ycombinator.com/from?site=linode.com
I hope they will recover soon and make the service stable.