IE is the Internet!
For some people anyway!
I was on a call (Teams presentation) just last week with someone from outside our organisation, the presenter was sharing their Desktop (rather than a specific document), you could see the taskbar, and on the taskbar, that they'd not only pinned IE (no Edge or other browser icons visible), but actually had IE open and in use! (The IE icon had the blue underline showing it was is use, just in the background).
Someone asked why they were using IE rather than Edge, i.e. did they need this for a legacy application? The response was that they'd always used IE for the Internet, and then asked us what Edge was! (This was an admin person, rather than anyone technical).
In my mind, IE really shouldn't be part of the default installation in the OS. In fact, is it even needed now [*] if Edge has an IE mode?
* I'm aware some of the legacy libraries might still be needed by the OS/some apps etc. But at least remove the IE icon etc. (or redirect it to Edge or a browser selection screen instead)!