The big problem with peak system is that you need to be level 15 or 20 to even hit bosses in pantheon hardmode, not even if people put in the effort to farm 100-200h to reach level 10 its still not enough, and for level 15 and 20 you will need 3 times that amount. 1-10 is 1165kk exp 10-20 is 3775kk
if you farm 15kk in 3-4h its 250 days of farming and thats from releasing it you cant prefarm. Its just a insane amount of time.