I wrote:

it happens that people think grazing animals are 100% climate-neutral

To which they responded:

Assuming the sheep are only fed from the grass they eat on-site, how are they NOT carbon neutral?

Then follows my lengthy explanation about methane. And then they write:

I wondered if you were going to go the methane angle.

So, they knew that climate-neutral ≠ carbon-neutral.
They knew that “Assuming the sheep are only fed from the grass they eat on-site, how are they NOT carbon neutral?” is just the wrong question to ask.

I cannot see how I should have not interpreted that as a technical question by someone who does not know about methane.
I wouldn’t care, if they didn’t now also tell me off for giving a technical answer.