New accounts get assets on level up that old accounts don't get ever?

So I have a group of friends that I play with that mostly consist of lower MMR people - I like them, but playing with them can be rough just because of the disparity between us. Generally, if I queue up with them, we're matched against a team of mostly high golds/low plats while my team of friends consists of me, two completely unranked players, one gold, and a bronze. Every game kept turning into a shitstomp against us where much of the weight was placed on me and the gold in our group - fun time basically just became stress time.

So in order to play with them, I made a smurf instead! Yay! But leveling up a smurf is frustrating for those early levels and it's dumb. Boo. But oh well, I've gotten past that to level 13 when I keep getting alerts for what I unlock - and this is the third time I've seen a custom rune page pop up as a reward.

I thought, that's weird. When runes were "reforged", I just started with two pages as a base. Why does it keep reminding me that I've gotten custom rune pages?

Then I checked - On the smurf, I have 3 rune pages. Oh, well, I guess they must have updated it! Hey! Maybe my main account has more rune pages! I was legitimately kind of excited that I discovered that I wouldn't have to keep fucking swapping my runes perpetually every single time and maybe I could just have a bunch of rune pages to choose from.

...... Except, no. No, I only have two rune pages available to me on this account. It never increased. I never got that reward.

Not only that, but new players get numerous free champs - like, entirely free, you just unlock them completely no questions asked - and even some free orange essence through the first 30 levels. They just get that.

So on a veteran account from before the rune changes... I feel honestly kind of cheated. Before the changes, all we got for level ups were fucking mastery points to allot so we would be that much less at a disadvantage with each level. We didn't get so much "rewarded" as we did just get to play the game some more. Why the hell with all these changes did veterans get a grand total of fuck all while new accounts can have permanent assets on us that we would be forced to work far harder for to get? Like, one additional rune page is fucking 3150 blue essence - that's a lot to pay just to have the "privilege" of not having to swap your runes over and over and over every time you're doing something different (which for many players is most of the time). And it's not like every high level account has every champ unlocked, either - I've pumped in a fair amount of games on this one and I still haven't unlocked them all. Hell, my original account that I've long since forgotten it took 3 years to unlock all the champs and that was including IP spilled into runes, and there were far less champs then! I probably have about the same amount of champs now as I did then, and I still have like 20 more to go!

The point I'm trying to make is why were veteran players skimped on with these additions? Like, I'm not even going to ask for you to try and give us all the extra orange essence and freebies that we missed just because we "joined too early" (even though honestly you probably should), but at the least give us the same amount of rune pages that new accounts would get up to level 30!