Its not about delaying the announcement its about delaying the steemfest or the event for announcing the steem on coinbase. Block.one didnt make coinbase wait, they announced it a few days before the DC june 1st event for EOS.

Steem should be one of the next coins to be added because remember, we were on the list and all of these coins have been one by one added, we are just such low volume and low popularity that we will be added at the VERY end

... we still have to get past coins like digibyte and dogecoin :D

Binance is adding doge for FREE as a sort of charity to the "community" and coinbase could be next... dogecoin twitter users werent kidding :D