Craft is not a personal conceit. You're thinking about art. And even then, most arts have a craft. Knowing your craft usually makes you a better artist, but is not strictly necessary.

Respecting your craft means using the right tools and techniques for the job. Not caring about one group of users is no excuse for needing Javascript to display a chart. You don't use Javascript to display a chart because you don't need Javascript to display a chart. Render the chart server-side and use an image to display it. It's a static chart, it's not like the information is changing with every page load. To do otherwise is just lazy and disrespectful.