Let's stick with facts instead of fear mongering.

I dislike Ajit Pai as much as the next person and wish he had heeded NASA's request to delay the 5G role out. That said, it's not a forgone conclusion that 5G will significantly interfere with let alone eliminate the ability of radio spectrometers on weather satellites to measure water vapor using the 23.8 GHz band.

The new FCC UMFUS regulations that govern 5G require require signals to use a set of frequencies all of which are greater than 24 GHz.

That said, of course NASA is concerned about malfunctioning 5G transmitters leaking into the 23.8 GHz spectrum. Hopefully out-of-band emissions don't become a problem. It's the FCC's job to ensure that it doesn't, and the lack of carefulness so far in the process doesn't inspire confidence.