The phrase "although not simply" is correct and usable in written English.
It can be used to introduce a contrast or qualification to a statement, indicating that something is more complex than it may initially appear.
Example: "The solution to the problem is effective, although not simply achieved."
Alternatives: "though not easily" or "even if not straightforward".
The club manfully resisted Chelsea's overtures to Stones last summer and will arguably be in an even stronger position to do the same again once the extra television income has been banked, although this is not simply a matter of money.
YouTube made a similar announcement earlier this year, although YouTube is not simply blocking copyrighted material – instead they are encouraging the copyright holder to allow the use and take a revenue share from advertising placed around the video.
Although humans are not simply large mice, it does not take a great leap of faith to postulate that elevations in circulating BAFF levels contribute to development and/or maintenance of SLE in humans and that blockade of BAFF activity could be therapeutically beneficial.
Kenneth A. Gross, a campaign finance lawyer, said that although Mrs. Clinton could not simply walk away from the remaining debt, she was not under a strict deadline for paying it off.
The fragment mass distribution follows a power law, although the exponent is not simply related to the largest fragment size as assumed by fragmentation models.
Although I suspected that this was not simply another postmodern exercise, nevertheless I found myself picking up the book, getting infuriated and slamming it down.
Because the sifter is a useful object (although some might argue otherwise) and not simply decorative, there was nothing Mr. Lombardi could have done to stop them.
"We are going to make judgments based on the actions of the Iranian government, not simply its words, although we appreciate the change in its tone," said the senior official, who spoke on the condition of anonymity under diplomatic protocol.
It is not simply a framework, although it can provide that; rather it is a story about what you think is happening and why.
These results suggest that, although the effects are modest and not simply related to plasma concentrations, progesterone and its metabolites can produce sedative-like effects in both men and women.
