He was working with extremes and one has to remember this is LONG *before* the Eastern influx to the West.
Logical positivism was *very* rational and when he was dealing with the yogis they were *very* yogi. But since the knowledge was brought forth to the West and there was cultural intermixing, better understandings and also changes to each of the respective cultures took place.
But I think in his time, the differences were far more stark.
I mean just look at the time he visited: late 1930s. The British occupation of course had been in place for a long time and a lot of English customs were already adopted in India… but what was foreign was still more foreign than it is now.