Respectfully, I genuinely don't understand what yours or his point is, then.
If it's about release product quality, how is drawing a parallel between a released and an unreleased game relevant?
They're two higher profile games from indie teams with a lot of built-up affection from fans. The article talks about the scope for Cuphead being expanded from their original plans, and how they're trying to be realistic about executing on it (and what's on the line for them). NMS is widely known for the backlash because its purported scope/execution fell short of expectations. What had been open and amiable communications between the studio and the public cut off abruptly as that backlash became more widespread. It's a cautionary tale the author was drawing a parallel with.
TL;DR: The connection is indie studios dealing with scope changing during development, and how that can potentially sour the reactions to the product if it's not kept realistic on both ends.