They arent "starting" they announced the 800g for 2023. thats not usual as stated in the text but to:

"The customers will need time to accept the changes. The announcement was not a surprise for Broadcom’s largest customers, but it is a surprise for the broader market, that needs to get on-board. It is also a starting whistle to the competition. The race is on and Broadcom plans to stay in the lead."

so if u cant digest even that, than u should definitely ask "the techies" about the 100w per cm² thermal management already accomplished.