Do people really get bothered because a certain word was used in a previous title? Try being a Kumi fan then
Just in one album she had Your only one, One, One night romance, To be one, 1000 no kotoba (a stretch but still contains the number lol), plus the album title grow into one
I'm more annoyed though when artists use the EXACT title... For example Leona Lewis has two songs on two different albums called I Got You haha