Following them let you NOT check the option (Point 5), but it should rather be checked
2. the Option is hard to find in the import-dialog, would be helpful if its open default
3. the naming of the option is not clear:
"Import text as HTML" is not clearly communicating what it really does (can I import an plaintext-file as html..? Is it saved as HTML in the database? Is the imported file comverted to a HTML file?)
should be imho something like "Remove HTML Tags" or similar.