I suggest you re-read the article and consider the effects of volcanic winter on all the people and businesses and infrastructure that makes internet access available to you and me.

If software engineers are busy raising rats and mushrooms to eat (neither requires sunlight), they will not be in their cubicles keeping end user services running.

Parts of the internet will survive, primarily for government and perhaps some critical businesses that have prepared for such events.

I sincerely doubt that ordinary peasants like you and me will have access. I would certainly not rely on it.