Except that you are effectively telling him that he doesnt know what hes talking about.
Which seems real strange since he clearly presents his thoughts as his opinion,
his personal experience on the game and how he believes others might feel the same.
Your basically telling him: ''your wrong, heres some suggestions so that you can learn to play better''
But tbh i dont expect someone with your forum name to be keen on knowing how to listen to people. :P
Know your absolutely right about the leve stacking being implemented, thats also what i first thought about when i read his post.
However if you believe it is indeed a large improvement over the current system and will fix his problems, then just go out and say that, and
only that. xD
Anything else isnt really advice~
Note that telling him to learn to play his class when obviously his new (you know, where we all start at?)
is the defination of hostility.
I personally could not do those things you mention off the bat when i started, however i decided to level all classes to 10+ and being a well experience mmo/other game veteran i could do so not long after.
This does not mean its easy to learn period and that anyone who cant do it needs to l2p.
To validate my point, have you ever soloed the rank ''10'' dodo leve at drybone at 5 stars while being rank 20?