I'm at Google, and yes, there are plenty of vegetarian, vegan, gluten-free, kosher, etc., options. It's still impossible to meet everyone's needs, but at least 99% of employee's dietary preferences are taken into account.
Before responding to these sorts of threads it's important to recognize that Google/FB/etc... are so far outside the norm for any company and not just tech. Most people working do not have access to full suite of gourmet food for every meal, a private gym, labs, etc...
A significant proportion of the overall HN readership has access to these perks. It's not unreasonable to discuss them in the context of the pros/cons of working from home.
The linked page / disucssion is not for the small percentage of google/fb workers.
You are still a minority.
If you're gluten intolerant then you're also in the minority.
Sure, but I'm not commenting in the discussion on the linked article, I'm commenting here, for which the factors I'm mentioning are relevant to lots of people. If you work at a top tier tech company and live reasonably close to work, working from home doesn't have much draw except possibly if your open office work environment is noisy and distracting.
I'm not aware of a single company in the city where I live that provides such perks. Some companies might offer a few, but not at Google or Facebook's level. This is in a metro area with over a million people.