Do you need use Web Components in your application? No, you don’t need it. I’m totally against the hype. You should use if only you need. I see some advantages to use if you really need it. For example componentization and your advantages, very small final bundle size, etc. In the article I talk about a project we(My team) started at globo.com. The project was build Stories like Instagram. We use ZuckJS for a POC(proof of concept) but we need to customize a lot this lib. It was a very expensive cost to customize, so I start writing a Vanilla Javascript Lib and after I transform it to Web Components. You can see here the vanilla version — branch master.