I get this, and I see your point. Like every other aspect of engineering, it's all about balance. You don't want to jump on the latest thing just because it's new. But if you're building something new, or doing a major rewrite it's useful to look at newer technologies.
The key is focusing on what problem you're trying to solve. If the new technology can solve the problem with a low enough amount of effort, why not? If you have a tried and true system and it can solve the problem without negative side effects, choose that.
I like to keep an eye on emerging technologies and have another tool in the toolbox if needed.
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