Yes I confirm that you can use a client directly implementing the TLCP protocol with COMMUNITY edition by leveraging the parameter:

<enabled_client_api>generic_client</enabled_client_api>

of section community_edition_details in the lightstreamer_edition_conf.xml.

But in this case I confirm that a server can only support clients of only the specified type: so if you enable Generic Client, the normal web clients cannot be handled by the same server.