Imagine trying to glue together the open ends of two tube socks. It would be time consuming to line up the ends and not glue the other side together, etc. This technique is like putting a solid round canister inside the junction of the two tubes, making it very quick to line up the edges and glue them together.
In this case the canister is a cylinder of poloxamer gel that is solid when warmed above body temperature. After the connection is glued, the gel cools and liquifies, leaving a perfectly glued joint.
So until these ideas actually end up in a product, I won't be complaining.