I include PDFs because (1) they’re expected, (2) clients can always open them to view the logo, and (3) they can always be used in a pinch by designers when clients can’t find all those more appropriate files that they couldn’t open. Logos are simple shapes - basically nothing more than simple filled paths.

What you’ve described is true, but these are problems more typically encountered in more complex files. If you’re sending files to your clients PDF format and they’re opening it in anything at all they could cause strange things to happen as not all things might be honoured - like clipping paths, gradients, compound paths. That is - if you saved a PDF from Illustrator with Illustrator editing capabilities that’s fine. Nobody should be opening any PDF in any program other than what created it. Illustrator - and other Vector editing programs are NOT PDF editors. As opening PDFs or EPS or any other file format in anything other than what created the file is going to cause problems. Any application or extension that makes it quicker for those who frequently design logos is money well-spent. However, the point is that it really can be a tedious, time-killing, and expensive exercise to bundle up a comprehensive set of logo files. Those companies with on-staff designers likely don’t need them anyway. For that matter, it will confuse most of them. Of course, not every client needs all these files. I’m just scratching the surface it can go on and on to dozens of files. Variations of all of the above for different departments or entities within the company needing their name names incorporated in various configurations.Black and white versions of all of the above.Larger, more detailed versions of all of the above.Small, simplified versions of all of the above.Different configurations for all of the above - for example vertical and horizontal lockups/compositions.A JPEG (for some reason clients often want them).Greyscale and B&W versions for light and dark backgrounds.RGB and CMYK raster files (TIFFs maybe) for both light and dark backgrounds.

Pantone versions for light and dark backgrounds.24-bit PNGs for both light and dark backgrounds.Often, there are many more files than that.

Inkscape review or illustrator