When she says "entire profit stream" does she mean "entire income stream"? ... asking for a friend!!! ;-)
I hate to say it, but the way I read it, I think they are talking at cross purposes. She's talking about the amortisation of intangible assets. He's talking about intangible annual operating costs of some undefined sort.
As regards depreciation/amortisation rules, I don't know US corporation tax law very well, but he might say that many industries have their own ones and so the oil and gas industry is no different from them. For instance, I think the real estate industry has special rules. People who invest heavily upfront want/need tax breaks so that they aren't out-of-pocket for years while working on long term projects.
I don't think that's unreasonable or unusual.
So I don't think he was being inaccurate or patronising. It sounds to me like she's spoiling for a fight because she doesn't like the industry he works in. I get it. But at the moment, it's not against the law to operate that industry and it's up to congress if it wishes to pass a law to make it so.
[I don't like them too much either, but that doesn't mean I think his answer is patronising]