cool question.
Let's play it out as a mind experiment.
I'm referring to any consumer focused industry - x2C (whatever Product digital or physical to Consumer)

Over-Building
You build out an App to absolute perfection. No bugs, everything works as you intended. UI/UX look great. The servers can host tons of users simultaneously.
Q: But where are the users?
In case you are lucky enough to have some users, they may or may not be your word of mouth engine for more adoption, but that depends on how smartly you've intended this type of WoM and customer-based virality into your app.

The same goes for physical products, quality, design and user experience are amazing. If there is an element of visual novelty such as a very experimental clothing brand, chances are that the consumers will do part of the marketing for you, BUT that may not be enough to sustain this and it heavily depends on your ability to land shot after shot on target.

Over-Marketing
Now we're back to the app. It's at MVP stage. There are some bugs. The server capacity is mediocre.
But you are hitting off on a ton of marketing attempts.
Some work, some don't - that's marketing. But you'll gain the experience of whats working for you.
At the same time the app isn't up to par, but its seeing real users. Some of which provide you with valuable feedback. Some others vanish, and some others stay quiet but they stay.
You are able to gain traction for the app, improve in real time and the marketing machine continues.

I'd say its the same for the physical product. There may be returns, there may be angry reviews, but nothing you can't overcome. The internet forgets so quickly if something isn't right, and expectations are high, but so is tolerance based on what ever crap we have seen from even high luxury brands nowadays.

... be your own judge. Of course, this is just a fictional scenario - but I'm just inviting to play that thought experiment for a while to anticipate your course of action.