I'm rather new myself;
being a lvl 53 PLD, 71 DRK i have leveled my whole time as a tank
Overall it's true; it's a lot like in WoW, with the exception that there's no real "kill X boars" quests in the main story, so just mass-pulling won't get you ahead.
If you decide to roll a tank your best bet will be leveling trough "duty finder". Which is OK, but you will once again experience the woes of LFG leveling in WoW.
(i mean the "gogogo or i pull" mentality)
True, but the method still works, only at a slower pace. It can give you a nice boost if queues are long.
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Yes, that is true, But you can take back control by not using your tanking cooldowns if they pull. I've had a tank do that yesterday. Honestly I don't recommend rolling tank as your main job because people do kinda expect you to take the lead.
Oh and welcome to Eorzea, Zmagoslav? How are you enjoying yourself?