I'm sure I saw, recently, a word for this, but I can no longer remember, or find, it.
A trite or banal remark or statement, especially one expressed as if it were original or significant.
I good word for this might be meretricious, which means, courtesy of Oxford:
Apparently attractive but having in reality no value or integrity.
It's not exactly what you're looking for, but it describes pretty accurately.
Were you perhaps thinking of deepity?
The term refers to a statement that is apparently profound but actually asserts a triviality on one level and something meaningless on another.
E.g.: "love is just a word"
On one level the statement is perfectly true (i.e., love is a word) but the deeper meaning of the phrase is false; love is many things — a feeling, an emotion, a condition — and not simply a word.
It can be called a wind and you can use windy as an adjective.
wind - Empty, pompous, or boastful talk; meaningless rhetoric.
windy - Using or expressed in many words that sound impressive but mean little
Surprised nobody has yet suggested (or even mentioned) truism.
I would suggest: Hollow
Without real significance or value:
Easier to use in a conversation then some of the more formal suggestions