When a startup closes a service, I'm pretty sure most people in HN will be equally cautious about investing their time in any new product the same startup might launch.
What you are basically saying is that if someone fails, we should avoid them in the future.
That's not very encouraging for anyone trying to build a business (or anything else).
I'm sorry, but this is an awful excuse. We're the type of people who master new technologies quickly. There's essentially $0 cost, and a ton of benefit, to new products becoming available. That's why they're exciting.
If the same startup starts another useful product, I'll check it out. I think people with your attitude are saying they'll cut off their nose to spite their face... but they actually won't. They'll use useful products, no matter the track record of the company, if the tradeoffs are close to right.