Ironically, quality is the enemy of a startup. You can only do quality once you've got Product Market Fit (very very subjective thing, i understand). The analogy is building a quality, beautiful hotel on Antarctica - it's effectively useless and no one will pay you money you need for it to survive.
Oversimplification is, test, test, test until something sticks. Once something sticks optimize it with quality.
So initially, yes, you need faster, faster, faster.
For example, Avo (https://avohq.io) and Bullet Train (https://bullettrain.co/) are IMHO higher quality than what a typical intermediate developer could accomplish in weeks of full time learning and coding.
If they pick just one wrong tech (that is not the best for your use case, e.g. an over complicated ORM) then they have wasted a bunch of your time.
If you know you work faster without these, then fantastic - off to the races for you. But for every one of you I’ve met in my career, I’ve met 10 of the opposite.
It’s also just a classic line of premature optimization - you will likely rewrite big chunks as you grow and scale anyway, and the sooner you accept that and just focus on getting to market the better.
When you’re not a start-up. (Obviously oversimplifying. But truer than not.)