Absolutely politicians need to be informed. No one would disagree with that. However the job of lobbyist is not to inform - explicitly. That's not the purpose of a lobbyist. The purpose of a lobbyist is to influence public policy in favour of private interests. Usually industry, but sometimes individual corporate interests. The relationship of lobbyist to politician is similar to advertiser to broadcast audience. Hypothetically there is an informational component to the communication - but only so far as its effective in manipulating its intended audience.

Instead what politicians should attend to is published research and organisations like the National Science Foundation which exist in part specifically to foster, explain and communicate the state of the art of knowledge in a given domain to politicians.