Yes, because price can just fill the imbalance and keep going in that direction, this is why they wait for price to get to the imbalance area and then go on lower timeframes and look for Break of Structure or Wyckoff as confirmatin.
And there are those who trade breaker blocks with imbalance too, so yeah, there are multiple ways to approach the market with "Smart Money Concepts".
I personally trade order blocks with market structure and then use imbalances and liquidity to know where price wants to go.
Wyckoff/VSA is good to know (I'm learning it myself), but I don't think its necessary if you understand how market structure really works, people tend to overcomplicate trading and then they wonder why it's hard to keep emotions in check.