It's funny because when Spencer was writing Captain America, everyone wanted him removed from the books and plenty were sending death threats. I read the series and I enjoyed it because I knew that there was no way on hell Marvel would ever allow that reveal to stick - especially with how popular the movies were at the time. So my thought was "this was last so why the hate and why should i be mad?"
My issue with the Kindred reveal is that long arcs such as this almost always fall flat. Some people here are pissed off that Kindred is pre OMD Peter. Some are pissed off that it's Harry. Some are pissed off for whatever other reason. I am pissed off that i am dropping 4 dollars (plus tax) on a comic that I can read in 5 minutes and still think "okay so what are the answers?" And I lived through several long running mastermind stories such as the 90's clone saga and the fake Green Goblin from 1998/1999 that was a "genetic construct" that amounted to nothing. Again, i couldn't care less about OMD anymore just explain Harry's situation over the last 10 ears without dragging it.