When I was a developer, I always wanted to use the latest language and framework. I would accept the foibles of the framework, just because it was new and cool. Spend hours setting it up, installing all the different components, writing a simple application and then deploying at the click of a button …. only to spend hours in the server backends, trying to understand why it did not work! I’d then get a exciting new job using the framework, and be immediately lauded as the star developer, which in truth became more like first line support.
As CTO, you should always be super aware of trends, but very weary about jumping straight in. Can you afford to lose man days, whilst the team gets it head around new technology. They might be having fun, but you’re getting nothing done and that costs money.