Even as a experienced jumper (in my opinion), with about 3k hours in jumping, I still have had the same issues. I cannot say for sure if they are just joking or actually mean what they are saying. Even though a lot of jumpers are willing to help newer jumpers, I have found that just playing on offline servers is a good way to learn, no lag and you can find jump tips elsewhere, such as youtube or jump.tf . Also if you want help learning to jump I would be happy to help anyone, feel free to add me.
Profile Link : http://steamcommunity.com/profiles/76561198183614045/