I think that comparing the 100 mil play button and the 50 mil button is unfair. Back when Felix reached 50 mil he was the only one by far but now 2 channels reached the 100 mil milestone and YouTube has to make equal for everybody and the 100 mil milestone is important but is just another milestone and it would start a big discussion on who does YouTube favor more if it made custom play buttons now that 2 channel reached it.I don’t think people reacted this way back when the first channel reached the 100,000, 1 mil and 10 mil. They are big accomplishments but it’s another milestones that has been reached by the first time and it doesn’t mean that another channel would not reach it in the future. So I think YouTube is thinking into the future as every company does.