To the point of the article: A lot of Quakers dont label their worship as meditation. The point of quaker worship is to open your heart to "listen". The point of meditation is often mindfulness. there is some overlap but i think it is a different ends from similar means.
Another contrast is quaker worship is done in a community looking inward towards the center of the room, Zen meditation when done in a temple is done looking at the wall. for me this is a contrast between the quaker "society of friends" and zen can be done in isolation
Quakers for me have a special place in my heart.
I'm a bit sad that in California there are very few Quaker communities when compared to Buddhist or Zen communities. The quaker communities that do exist seem to be hanging on from the counterculture movement several decades ago.
I've attended a Quaker community for the past couple of years and sadly it is dying out. Almost all of the members are past 60 y/o and almost zero young adult members or younger members attend.
I think the Quaker philosophy is powerful and unfortunately i believe it has lead to its downfall. The lack of creed and resistance to structure makes it hard for new members to feel comfortable and make it easy to be more casual about your membership. this leads to people just dropping out.
also the structure of quaker practices can seem offputting for people from more conventional religious backgrounds. For example christmas "celebrations" are done entirely in silence from the moment you enter to when you leave. this is a staggering contrast to almost every other celebration. (also in contrast to most of christianity a lot of quakers dont believe jesus was "holy" but rather an ordinary man who was more in touch with the "light", underscoring the intensity of their egalitarian beliefs)
I think Quaker has a branding problem. People think of quaker oats or amish. (amish have nothing to do with quakers). Zen is more trendy and "mystical". If quakerism was "rebranded" a lot more people would be attracted to it.
My heart yearns for more Quaker communities. Its so sad to see them die out.