A tech lead's technical judgment is their currency, but you can't read everything. The skill isn't consuming more — it's filtering signal from hype and going deep where it counts. Treat learning as a deliberate practice, not something you'll get to "someday."
Your engineers are a learning source you already have. When someone goes deep on a topic, have them share it. You don't need to be the most current person in the room — you need to know who knows what and synthesize it.
A tech lead who stops learning slowly makes worse calls — endorsing dated patterns, missing genuinely better tools, losing the respect of a team that can tell. Staying current isn't about knowing every trend; it's about keeping the judgment sharp enough that people trust your technical decisions.