It is entirely possible for an FIA to recommend cryptoassets to his client.
However, before any recommendation, the FIA has a threefold duty towards his client, as defined by the AMF (Autorité des marchés financiers). In the context of investing in cryptoassets, the FIA must ensure that the investment corresponds to his client's objectives, but also that it is suitable according to several criteria. The FIA will also be required to inform its client of any remuneration it will receive from the third party organisation.
As part of the good practices established by the regulator, as in traditional finance, the adviser will fulfil his "due diligence" obligations to direct his client towards an investment professional that meets his needs and objectives.