Ha ha, good point :) Yes, hing is a very strong spice. But it can be a light spice, if you use little enough. Normally just a tiny pinch of it is used. Also, in India, the packaged variety you get from shops is usually mixed with some filler material which makes it less strong. Not sure what, need to check. In a similar manner, for example, some mustard powder out here is mixed with some whole wheat flour (atta) and turmeric, for the same reason. E.g. Weifield's Mustard Powder, a common brand.

Yes my impression is it’s atta

Most commonly. I'm in North America and that's also true for the hing here. Though I have found other fillers, which is good for people who need to avoid gluten (atta has gluten).