I mean, it depends. I hire SRE/Devops and I really don't care that much if you used someone else's theme, or paid someone to write one for you and credit them. In fact, it'd be kinda neat to find someone who bought a theme. That's just good specialization and collaboration skills.

And my own website is basically the Pelican generator default with a different color selected. Far more damning is the placid update schedule. Try not to put dated content on your front page if you're putting a website in front of manager's faces.