The comment above probably meant to say that any environment becomes "serverless" as soon as you stop managing instances/servers manually and interact with it strictly via an API endpoint, which of course has always been possible but required fairly in-depth knowledge of AWS APIs (or other cloud provider's).
Look, there's nothing dirty about re-framing the conversation every once in a while. It may feel like BS at first but over time we attach new meaning to old words and it becomes easier to communicate capabilities.
can't and not needing to are two really different things. the 'not needing to' just being shifted to having to use proprietary environments for doing stuff essential to debugging (like looking at log files) is, for most people, not a net win.