You must operate on the theory that the NSA can crack any encryption.
If that were the case we wouldn’t trust any financial transaction. In know encryption, I’ve a background applying it in software systems. Yes, there’s a brute force approach to cracking a *specific* device/message but you’d want to have an extremely good reason to put the computing horsepower behind doing so. You couldn’t do it for everything you capture. Even then, depending on the encryption used, it could take a long time. Capturing encrypted content is a long way from knowing the decrypted content.