Not at all. Just repeating something said by Chuck Taylor. As a lover of the FN he was surprised that the Israelis didn't like it and asked some of them why. One of them responded that they did not clean them enough and wanted AKs because they required little or no cleaning.
As I said in my post, the Israeli model was based on the early trials rifles "FAL Canada" and had several of the original features that were later re-designed. For example, the extractor is retained by the old (obsolete) "hairpin" or "paperclip" spring which was redesigned and replaced on both Inch and metric rifles. The forward assist was designed and built by the brits for some of the trials rifles to please the Americans who like them.
The brits found that early FNs did badly in sand, which was unacceptable to them, given their involvement in Egypt, Yemen Oman etc, and developed the sand cuts. Incidentally, Metric FN rifles were availble from the FN factory with the British sand cuts on request.
The Brits used the FN in Yemen and Oman without complaint and northern Australia is pretty sandy and the Aussies loved their FNs.