Last I checked CloudFlare routinely handles[1] 10Gbps to 65Gbps attacks, and has successfully handled attacks as large as 300Gbps and 400Gbps. According to this report DNSSimple crumbled under 25Gbps.
[1]: https://support.cloudflare.com/hc/en-us/articles/200170216-H...
Granted we are probably more vulnerable to DoS, but our general uptime is far better now.