Not really. Bitmaps were very rare at the time and without internet access it was very hard to source clip art for visually appealing documents like the ones shown in the ads.
I think the bitmap being shown in MacPaint implied that you were supposed to create your own clip art from scratch. Which would technically be possible, if you were already a good artist.
But the real weakness, at the time, was in the final step--printing. Apple only had its Imagewriter series of dot matrix printers, and there was no support for vector graphics in any case. So you could print things, but they wouldn't look very professional.
A few years later, when Apple licensed Adobe's vector font software and built their first laser printer, that's when everything changed.
The Laserwriter was one of the first accessible laser printers. And also the first with Postscript. It was super expensive (easily more than the Macintosh needed to print to it) but it was revolutionary.
The only other common option was the early HP laser printers, but no Postscript.
But the real weakness, at the time, was in the final step--printing. Apple only had its Imagewriter series of dot matrix printers, and there was no support for vector graphics in any case. So you could print things, but they wouldn't look very professional.
A few years later, when Apple licensed Adobe's vector font software and built their first laser printer, that's when everything changed.