[JamesGriffin]

Hell no.

Maybe it's different in the Bay Area, but at least in North Texas where we are headquartered, I see a ton of older front-end developers. Not to mention, I see a lot of people much older than you do a bootcamp in JavaScript to switch careers and get hired.

As long as you're willing to stay up-to-date on the latest JavaScript framework, you'll be more than fine. The reason you see a lot of older back-end developers than front-end developers in my opinion is because it usually pays better and back-end technology stays more static than front-end technology.