The terms LFG and LFT are player developed slang and abreviations. They have been developed and incorporated into the game by the players. It is up to you whether you use them or not. But it is wrong for you to try and pass judgement on an abbreviation just because it is aggrevating you.
for example, your post heading "Stop the shouting PLZ!"
you have used capital PLZ to show that you are frustrated and that you want to make the sound of the word shout. So you use "PLZ". You are simply contradicting your words. If text shouting bothers you so much, then why to you use it on the forums?
You must know that this is a MMO game that has many people with different tastes and likes/dislikes. We have to cater for all not just one. So if something bugs you in future. Think before you start ranting.
Regards