2500 hours is a LONG time. I've been playing almost daily since season 2 as well, and I only have roughly 1800 hours.
Also math,
2500 hours = 150000 minutes.
Average game length is roughly 31 minutes, we will round to 30 to clean up the numbers.
150000 / 30 = 5000 games.
5000 / 3 (years playing) =1667 games per year.
1667 / 365 (days in a year) = ~5 games a day.
This means that you would have to play a bare minimum of FIVE, thirty minute games EVERY DAY for three years straight in order to hit the minimum to receive the reward.
5 games a day at 30 minutes long is 150 minutes which is just shy of 3 hours a day playing.
Look at the demographic of players, average player is 19/20. Between school, college, jobs, family, and being young, 3 hours EVERY DAY is a pretty high benchmark to hit. I'm willing to bet that out of the millions of people actively playing league, maybe, MAYBE 3% of players will get the 2500 hour mark.
So my question is, how far do you want the rewards to go? Because theres some dude in his mothers basement living off welfare and his dead fathers social security checks, eating hot pockets and flaming hot cheeto's. That dude would look at your 5400 hours and SCOFF (probably spit up a little bit) and say "WHAT ABOUT THE PEOPLE WITH 10,000 HOURS?! RIOT HATES VETERANS!"
Like seriously, be proud that you hit the 2500 mark, MOST PEOPLE will not be able to get even close to that. and you'll be able to show off the reward for 2500 hours, which is honestly quite the feat.
Everyone is so quick to complain about Riots rewards when they honestly dont HAVE to give us anything for playing their game more than a normal person should.