Your attaching an antenna without proper ESD protection is actually a testament as to how static sensitive LNAs really are.
The MAX12000 used in a the NooElec LNA and SAW filter has ESD protection up to 1KV. Many LNAs have no protection at all. However, it's not hard to 1KV or more of a charge built up during dry weather.
MAX12000 Data Sheet
And, to the contrary, providing a high voltage path through to ground that bypasses the LNA does help prevent ESD damage. It's best practice in commercial applications to use gas discharge tubes, MOVs, or back to back diodes on the input to the LNA. There are solutions that involve inductors as well. ESD protection and proper grounding keeps your LNA from being the fuse for your SAW filter and SDR.