Requirements to get 25 skills to lvl 1 and 1 skill to lvl 10 were added all at the same time. Some clever guys started to make hundreds of alts and it had to be stopped.
I have never seen the warning message but i doubt it doesn't say exactly that - 25 x 1 and 1 x 10.
About the gains and sense of achievement, should the game constantly pat on your shoulder and say "Oh your so wonderful"?
While actually all you did was 2 clicks with a mouse that anyone can do? What's this achievement worth, do u even remember it after 5 min?
It's not some mainstream WoW-style MMO where u can rush up to lvl 50 in a few days... and i'm glad that it isn't.
This is a completely different philosophy here, a virtual world that lasts for years.