I've been in my field for 21 years. I make really good money, and have high confidence in my hard-earned skillset. I focus on Cloud Infrastructure and general Linux administration, but I code in a handful of languages to facilitate automation (because I'm lazy). I consider myself extremely well versed in technology in general.
... Then I watch a YouTube video where some guy hand-solders a motherboard for his custom-designed keyboard, and decides it's easier to - instead of adapt someone else's - write his own driver from scratch, then open-sources everything from the PCB, to the CAD files he used to print the case, to the driver itself. Then he uploads the video, titled "Quick weekend project because I couldn't find the keyboard layout I wanted on Amazon", and forgets about the whole thing.
In that moment, I feel like a complete, no-nothing idiot.
A person with a doctorate in astrophysics isn't not-a-doctor because they don't know how to do brain surgery. Hell, a doctor who is a surgeon isn't not-those-things because he isn't - specifically - a brain surgeon.
Don't sell yourself short because other people do things you don't (yet, or even ever). You're a technical person.