The end of the Gentile Times, at least, is consistently true, I would say
Even that though is like claiming you own an axe that once belonged to George Washington. If the head of that axe has been replaced once and the handle has been replaced several times, is it still the same axe?
Prior to 1914, the end of the "Gentile Times" was understood to mean the end of the Gentile nation's rule over the earth. 1914 came and went and the Gentile nations continued to rule. 96 years later they are still ruling. One by one various facets of this teaching had to be replaced to align with reality. This included dropping almost all of the original reasons for believing in 1914. (e.g. Israel's double, Parallel dispensations, Jubiliee cycle, Pyramid measurements, etc.)
Like the axe analogy, there is little, if any of the original teaching left today besides the name.