Mechanical web shooters are fine since arguably Spider-man does not have spider powers, and is just mutated and named himself after getting the thing that gave him the abilities.
In universe, there's plenty of characters with entirely ridiculous tech that they could have never realistically made with their resources, or that someone hasn't replicated. You could argue that Spideys shit is just really impractical because it dissolves after a few hours, and most people assume he creates it naturally.
Also, holograms/super hi-tech gadget shit like in Homecoming is the lamest shit ever. I was hoping when he got the suit taken away, he would make his more basic version of it at the end, but instead lmao got it back.