That would be mostly due to the Bliss launcher, which can be installed on any recent Android, so it doesn’t need a whole switch over to /e/ to get the launcher at least.
I’m in the camp of those who don’t like it, but that’s Android for you, there are other options. Here’s some info …
https://medium.com/@edevelopers.blog/meet-the-bliss-launcher-e-os-default-launcher-3346f66bc8ed