Phi - It's not true, in general regarding Asian traditional martial arts (in the two koryu I'm licensed, the names chosen for waza or kata have multi-layered meanings).
And in regards to Ueshiba, it's definitely not true.
You are asserting that Ueshiba meant nothing by his spiritual references. That is not born out by the facts. Terry Dobson described traveling with him and he stated that every night he spent the bulk of the night praying.
i stand rightly corrected. question for you or those who know, does the usage of religious teminologies/names have some implication on philosophy as well as technical in martial techniques/principles?