I have no idea about MySQL, but what I always remind people is that HN is more GQ/Vogue than the NYT. It focuses on novelty and aspiration more than on coverage of what the industry is actually doing. Like others, I enjoy it because it's aspirational/inspirational, but I try not to confuse it with a reflection of reality. E.g. there's little correlation between programming languages that are discussed a lot on HN and those that achieve (or don't achieve) big and long-lasting success.

In fact, much of the software industry, which writes the software that matters to our lives the most and holds most of the value delivered by software in general - the software that processes your credit-card transactions, runs your bank, sorts your mail, routes your phone calls, manages the manufacturing of your car and the shipping of your packages, holds your healthcare information, schedules and tracks your flights, and manages your law enforcement and your government - is barely represented here because the organisations that write most software aren't software companies, and they don't tend to publish technical blogs.