Just because people tend not to edit large files in Notepad doesn't mean they'll complain about it when they do. Actual complaints are of course sparse because hardly anyone uses Notepad for anything serious if they can use an alternative. BUT when they do, oh they will complain.

I believe an older version of Notepad even had a (fairly low) limit on file size it would open.

I mean that's the reverse argument, computers have gigabytes of memory today, and are super fast, so you should be able to load a multi gigabyte text file and edit it, on a single line, with word wrapping.