If their goal was to finally introduce a suit with moving eyes then I don't mind that they had Stark build it. I know that in the comics Peter makes his own costumes but they do indeed draw his eyes changing in almost every panel and up until now it's essentially been presented as simply magic. That doesn't really fly in this new era of superhero films that at least try to pay some lip service to be connected to the real world.
And if Peter is making not only the web shooters but also a Spidey suit with eyes that move depending on his facial expression then he's essentially Reed Richards or Tony Stark and it then begs the question as to why he also isn't building spaceships, force fields, and all that. Giving the suit duties to Stark basically does the same thing that Nolan did when he brought Bruce Wayne slightly closer to earth by allowing vehicle tech to be provided by Lucius Fox instead of made from scratch by him and Alfred. That didn't make Bruce "Fox Lad" or anything it just reigned in his "can literally do or make anything" powers to be more in line with what audiences are willing to suspend their disbelief to accept.
And if Peter is making not only the web shooters but also a Spidey suit with eyes that move depending on his facial expression then he's essentially Reed Richards or Tony Stark and it then begs the question as to why he also isn't building spaceships, force fields, and all that. Giving the suit duties to Stark basically does the same thing that Nolan did when he brought Bruce Wayne slightly closer to earth by allowing vehicle tech to be provided by Lucius Fox instead of made from scratch by him and Alfred. That didn't make Bruce "Fox Lad" or anything it just reigned in his "can literally do or make anything" powers to be more in line with what audiences are willing to suspend their disbelief to accept.