If you were being fair, designers typically don't decide the website strategy or write the copy. Ente's site seems heavily optimized for a search-driven funnel – they are targeting people explicitly searching for 'photo storage.' When that's your primary acquisition channel, you can afford to be less pedantic about copy variety. They keep the copy incredibly sparse and let the context do the heavy lifting, there is also no need to repeat descriptions on-site when that context is already handled by the search description and App Store links. When people arrive on the site, they know what they've found.
In terms of the design, they cut through a lot of the bullshit developers and designers do on the web. The execution is great and there are a lot of high-fidelity details: the scale is on point, the text hierarchy is great, the use of colour is smart, it has a fantastic, almost brochure-like layout, and generally, the design is consistent throughout and plays an important role in customer experience and branding their product.
You're not their customer, they're not targeting Hacker News as a potential sales funnel. If your takeaway is the design team isn't interested in the product, I hope to God you don't work in web.