This false teaching is called “Universalism” or “Universal Reconciliation” and comes in a few different variations, but it generally teaches that God will ultimately save every human who has ever lived to be with Him in heaven.
Universalism is also a modern liberal attempt to legitimize all “religions” as valid regardless of whatever nonsense or rubbish they make up and believe, claiming there are many paths to heaven.
This teaching is in clear contradiction to the statements of Jesus Himself, being the only way to the Father, and the only Mediator between man and God. Friends, this is complete rubbish, and 100% in opposition to what Scripture says that Jesus Christ is the only way to eternal life. Period. [John 14:6, 1 Timothy 2:5-6, Acts 4:12]