The phrase "are mostly content to" is correct and usable in written English.
You can use it to describe a general state of satisfaction or acceptance regarding a situation or action.
Example: "Many employees are mostly content to work from home, as it allows for a better work-life balance."
Alternatives: "are generally satisfied to" or "are often happy to".
Otherwise, he is mostly content to skim the surface – and to offer the reader whipped cream.
But short of a chemical spill on the freeway I'm mostly content to stick to the purple byways forged by Google Maps.
Through it all he conveys 1950s life more vividly than any historian before him.Mr Kynaston is mostly content to let his sources do the talking.
Chomsky was mostly content to focus on English, but by the mid-sixties a group of his students grew impatient: they wanted to get to universal grammar faster, and so they started studying other languages as well.
Which is no great surprise because, despite the rococo obsessiveness of its special effects and its voracious sampling of past horror movies, "Van Helsing" is mostly content to offer warmed-over allusions and secondhand thrills.
In a 1986 profile of Ingrid Sischy, the then editor of Artforum magazine, Malcolm is mostly content to let her cast of art world egomaniacs hang themselves, quoting them at such length, you might almost be reading a transcript.
But that doesn't erase the fact that Greece has, until recently, been mostly content to wave large numbers of refugee families through on their journey northwards, without taking the trouble to register or screen them.
This spate of interest in amnesia, after decades in which the movies were mostly content to leave the subject to daytime television, is peculiar for many reasons, chief among them that the condition is pretty rare in real life, at least in the extreme form films and soap operas tend to favor: total erasure of identity, years-long gaps in memory and the like.
But until now, they have been mostly content to put forward their ideas in scholarly books, their bolder assertions -- that a proclivity for rape is written in men's genes, for example -- stirring debate on the cocktail circuit and in the halls of academe.
