Have MikroTik had any security vulnerabilities anywhere close to what has now been revealed about Ubiquiti? MikroTik's firmware seems very solid and I get the impression that they care about security and routines.
An individual vulnerability in a device is an issue but it gets patched. Hopefully it can't be exploited remotely. My biggest annoyance is when "infrastructure" ends up with outside connections in place (to the cloud or elsewhere), that breaks this model down (trusting the provider to mediate remote access, for example).
They're a big single point of failure, and this incident really proves that.