Thanks for the comments. Couldn't agree more. I also think your comments about 1999 are fare. There were a lot of nothing companies back then. Many tech companies are much more mature this time around.
Never the less, Amazon - off the charts expensive regardless of how many sales they had during the shutdown. Buy now and you might not be back in the black for a very long time.
However, it's stocks like Tesla that scare me the most. Absolutely no reason to be so high, other than exuberance - like 1999.