As long as we're airing pet peeves, mine is about over-literal misunderstandings:

> Kafka cannot scale infinitely. Nothing can.

It is very common that when a phrase can't be literally true, it signals a metaphorical meaning. E.g., if a teen tells you their new teacher is a million years old, it's not a literal statement of age. Similarly, nobody expects "scale infinitely" to mean that, as in Universal Paperclips, that we'll be converting whole galaxies into Kestra clusters. It means that any bottlenecks are external to the system.