The TL;DR answer is yes (when it comes to layouts), but the full answer is longer, more annoying, and well-explained in this post by Robin Rendle for CSS-Tricks.
Robin Rendle writing on CSS-Tricks:
We should see front-end development as a unique skillset that is critical to the success of any project.
I believe that’s why frameworks and tools like Bootstrap are so popular; not necessarily because they’re a collection of helpful components, but a global solution that corrects an inherent issue.
Bootstrap isn’t a skill though — front-end development is.
It’s supremely ironic that front-end development is incredibly undervalued by many, yet those same people use frameworks because moving a box around in CSS is “hard.”