The actual announcement was a lunar lander Blue Origin is planning to build. It fits right in with the new NASA plans for going to the moon by 2024. So much was already known. The presentation gave some more information like the new small but efficient hydrolox engine they are developing. Landed mass in the range of 3.5t. A later iteration may increase that mass to 7t which may enable manned missions but very unlikely until the NASA goal of 2024, the end of a possible second term of President Trump.

They use hydrolox because with water from the lunar surface they can at least potentially produce that propellant for the return flight on the moon.

The ridicule is about the slow pace of development with a huge amount of money availabe, Jeff Bezos pouring in $1billion a year to support Blue Origin.