Why should you buy domain only from Namecheap, but not hosting

I don't know why all people recommend Namecheap domains, but when we talk about hosting, everyone says don't buy it.

This is mostly because of its great offers on domain prices, but hosting on other sites is cheaper and faster than Hostinger, for example.

Here you can see The 10+ Best Namecheap Alternatives https://top-alternatives.online/web-hosting/namecheap-alternatives