Thank you for your feedback on this issue, I fully understand the frustrations of not having your new Nest Cams in the Nest App. I can imagine having to use two different apps at the moment is quite daunting, and could lead to frustration.
However, the new Nest cameras and doorbell are exclusive to the Home app because we wanted to create an integrated experience with your speakers and displays. A Nest Aware subscription applies to all of your cameras, speakers, and displays in the same home structure. Thank you for your continued patience, and support. I am more than happy to assist you further with this inquiry if you wish. Please let me know.
I am afraid you do not have the option to do so if you have the 2021 Cams. They are only available in the Google Home App, and there isn't an option yet to view it on the computer. I cannot provide you with any further information on that I am afraid because I do not have any. I am going to go ahead and lock this thread as nothing more can be done at this time.