Yes the quality has impact on the number of defects. But all these surface defects are really quite minor. Many years ago already had such issues for flooring, wall, skirting etc for new condos just that HDB flats were not renovated and so no such complaints then.
And if the developer deviate from the floor plan - like according to the Ch 8 show have two extra pipes taking up space - then can always ask for compensation. I saw from the show about corridor flooding after raining, just ask the developer to install windows can solve the problem. That was what I did to ask the developer to do last time.