It does pretty much everything a browser like Firefox, Focus, Mull, etc would do so I think it’s fair to call it a browser.
Also, the Android System WebView package is not installed on /e/OS
Edit: Yeah, never mind all that. The browser’s size isn’t shown correctly and some kind of WebView is installed so it may use that. The repo is about 70MB which makes far more sense.
It shows up as an installable app. Although, I just checked the repo of the /e/ browser and it is probably bigger than it appears to be in App Info. I’ll edit the post rq