[michalu]

As it is with many things this is both right and wrong depending on how you look at it.

Consider something like Brazilian Jiu Jitsu. The first 1000 hours will surely advance your game percentage-wise way more than the 1000 hours you accomplish after you've put 10k hours in.

However, there aren't many people with 10k of bjj practice and you're no longer in the rookie world. That 1k may make you just 1% better but that 1% means a lot among the elite.