Al Gore never claimed to have been the founder of the Internet. Vint Cerf and Bob Kahn both defended Al Gore against idiots like you.
Rush Limbaugh was on the radio daily in the early 90's calling Al Gore's information superhighway a Democratic Boondoggle. Republicans were fighting to kill the Internet. Al Gore was fighting since the 80's to fund it so it could grow into something bigger than a research network.
If Eisenhower can get credit for the US Interstate Highway system despite not pouring a drop of concrete, then Al Gore gets credit for the Internet.