Is a 20+ year time horizon enough to justify a teach heavy concentration?

I’m wondering if having a 20+ year time horizon means investing heavily in tech would out perform a more diversified approach. Tech comes with larger volatility, but due to the length of my time horizon, would these swings still out perform the broad market over a longer time frame? Essentially will volatility drag erode the CAGR of heavy tech investment over 20 years compared to a diversified approach?