I like vision trainer. Will it directly impact your next chess game? Probably not. However, it will help you better "vision-ualize " moves and squares in algebraic notation. This will greatly assist you in following book lines, keeping variations in your mind, and quickly identifying content faster - allowing you to cover more content (like study/theory) in the same amount of time. This will certainly help your chess.
So will chess.com vision trainer DIRECTLY help your chess? No. Will it train your mind in a means to receive content more effectively, INDIRECTLY helping your chess? Absolutely.
Is it worth while!