The phrase "are often simplistic" is correct and usable in written English.
It can be used to describe something that tends to be overly simple or lacking in complexity, often in a critical context.
Example: "Many popular explanations of complex theories are often simplistic, failing to capture the nuances involved."
Alternatives: "tend to be oversimplified" or "are frequently too basic."
But — as Austen could tell you — first impressions are often simplistic.
But as Austen could tell you first impressions are often simplistic.
In the multimedia era video montages set to music are common, but the results are often simplistic.
Simple answers are often simplistic, but then the best theater depends on an appreciation of complexity.
4. Young Christians' church experiences related to sexuality are often simplistic, judgmental.
But science is often complex and difficult to understand while our intuitive suppositions are often simplistic and erroneous.
The tone of much of the nation's public discourse these days is hysterical, and our response to societal problems is often simplistic and knee-jerk.
But it could be a useful corrective to an earlier way of seeing China that was often simplistic about its massive challenges, amnesiac about the halting way in which Western societies became free, and blind to the fact that China is, in its own way, opening up.
For this reason, the optimized Minkowski coefficient represents a valuable compromise between an approach that is often simplistic (i.e., Euclidean and Manhattan metrics) and the ideal, but impractical sophistication of empirical measurements (i.e., road distance and travel time, respectively).
However, such notions are often overly simplistic, ignoring extremely complicated relationships.
As a consequence, modeling efforts are often highly simplistic or highly complex with considerable expense being utilized in obtaining structures that do not capture all these structural details.
