They should think on cosmological time scales, cheap access to space means cheap access to space telescopes (which in principal can gather less noisy data)
We measure down to single photons in nanosecond timescales and a mag 3 or brighter satellite moving through the field of view is definitely not a good thing.
Not to detract from the topic, but this has been covered on HN many times in the past year or so.
Also, my understanding (from past HN discussions!) is that SpaceX are working on making their satellites less problematic for astronomers in the long term, although obvs we’ll have to see how well that the turns out.
You "delete" it by composting multiple images with a mask applied to the object position. This is done relatively frequently.
The human visual system uses this technique to some extent as your optic nerve creates a relatively large blind spot in each eye. Even with one eye closed, your visual system "deletes" this blind spot via image composting from visual memory or rapid eye movements.
