How are cybersecurity youtubers so knowledgeable?

I've been working in security now for 5 years. I feel like I am constantly practicing security, labbing, building networks in my home lab, reading articles, learning commands, trying out new tools, checking out new TTPS. Then when I watch a video like those from Ipsec or John Hammond I am just blown away by how knowledgeable they are and it makes me feel like I am a complete novice. Is this normal?

​

articles cybersecurity hammond home home lab ipsec john lab networks security security now tools ttps video watch working youtubers