Yes ! the oft repeated word serves to convince them that it is a reality, that they have the "truth", and that EVERYONE else does not !
This gives them a smug feeling of superiority.
The Scripture used to excuse the constant Doctrinal changes, Proverbs 4v18 in the most blatant example of irony, is not talking about "truth" at all directly, and certainly not religious truth : " The path of the righteous is like the morning sun,
shining ever brighter till the full light of day.".It is a Proverb about how if you are righteous, your way through life becomes clearer the longer you live.
Charles Taze Russell pointed out over 100 years ago as he founded the org. that when it came to "New Light" in understanding the Scriptures, it could only be called that if it ADDED to an old understanding, if the new "understanding" replaced an older one, what was replaced was never Truth .(Feb. 1881 W.T from memory).
Jehovah's Witnesses should take note of that !
All the while they were teaching the old discarded ideas, they were teaching untruth, what does their God think of such teachers ? Exactly, but while they were teaching lies they called those teachings, and their religion "The Truth", and if you as a member loudly pointed out from Scripture the correct view, you would at the time be thrown out !!!! God's Spirit Directed Organisation ? Nah.