> Sometimes, intentionally going after a market niche can be a good thing
Solo founder of a successful self-funded business here. A market niche is in my opinion the best place to be. A niche will be enough for a small business, but might be too small for the crazed GROWTH GROWTH GROWTH mindset of most companies. That's good! It means that you won't be competing with companies burning through VC money and selling at below cost (as in $19/month B2B SaaS) just to get GROWTH.
As to the main point of the article — pretty much all advice I was given turned out to be wrong. And nearly everything you read on HN (especially comments) is wrong. Or, more precisely, it's advice given by people who are not in your situation, have never experienced your situation, and likely never will. This applies to business strategy, but also to technology: your choices will be influenced by very different factors than those of people commenting here. You won't care about "industry-standard practices", fashions, trends, or "will it help my career" factors. You will care about line count, total cost of ownership, pace of changes (things that change quickly are expensive to use), reliability, and the ability to fix things when something breaks.
So, my advice would be to make your own choices and take all advice with a very critical mindset. Including this advice, obviously :-)