Why still with the blue Ezreal

I mean when will people let this go? I understand the niche is still possible but the tunnel to get there is SOOOOOOOOOOOO FREEEEAAAAAKKKINNNNGGGG LOOOOOONNNNNGGGG. Besides with his rework his mana costs have dropped. Even if you don't build mana you can throw about as many spells as an ap support. That coupled with that sweet lil item Essence Reaver mana shouldn't even be an issue.

I suppose I'm mostly just asking those who still try to make this work why really. I play a lot of support and more often then not from what I've seen people mostly pick him because they believe him to be a safe pick and pretty much cower away from everything short of a sure kill. So basically they're less useful then a support normally and even if they get to the end of that tunnel its like a 10-15 min marathon of feverishly spell flinging to get muramana and its only then that it appears the game really begins for them. Usually this far into the game real damage is a must but about 1 in 10 ezreal fail this trek and become a cute lil footnote in the gameplay unless they get really lucky.

I mean I just looked through the statistics of my last game as yuumi and I doubled the damage of both JG Graves and bot Ezreal. Ezreal finished the game at level 14 while apparently realizing muramana wasn't going to help much and finished trinity force first.