An honest examination of the requested budget will show you that Webb is NOT facing a 20% cut to actual operating expenses. For example, funding extensive grant programs for graduate degrees. Whether you think that is part of NASA's mission or not it is certainly NOT "operating expense." Perhaps...
Give us a break. This is a Cal Tech decision, they are the contractor that manages operation of the JPL for NASA. They also manage projects for NASA and other customers. They still have 5500 employees, and are working like hell to keep them.
The article states that the portion of the stratosphere under study is "pristine" and not subject to planet-level contaminants (ergo, material constituents identified must come from space junk.)
But it continues by acknowledging that stratosphere's "recovery" from earth-sourced ozone depletion...