As a tank myself, I think taking off aggro from a tank is in no way disrespect. Unless there is a very high ilvl difference between the dps and the tank (in which case the dps really should throttle their dps) or the dps starts aggroing while the tank is still pulling, it means that the DPS is doing its job and the tank isn't.
Especially as a warrior, you shouldn't lose aggro until you hit level 50 and there is a massive ilvl difference. The only way to lose aggro at lower levels if you're not playing at your best, and if you're not marking/players aren't following your marks.

I think one of the biggest problems is that many players don't do their research and find out what skills are best for generating enmity. For example, earlier a player mentioned that he could not gain aggro no matter how often he flashed and overpowered. Well, just using flash and overpower is pretty wrong. At most 2 mobs will be targetted by dps, and all other mobs (usually there are 3-4) can only gain healing aggro. Instead, using the standard BB/Halone combo generates far, far more enmity, but on a single target. That means that using 2x aoe followed by BB/halone on one target will secure your aggro very well on this target. If you're marking and people are following you (DPS not following marks means you get to shout at them or let them keep aggro), it should be very hard to lose aggro on a standard group where everybody is hitting the same target.

Do note that of course you need to follow up with a couple more overpowers/flashes throughout the fight to make sure your healer/summoner/black mage doesn't gain aggro.

There is a really nice enmity chart on here that is a good read for any tank. Of course, you can find this out by experimenting yourself, but if you're complaining on the internet to begin with you can also check up on a very quick table.

Other than being heavily outgeared (the weapon damage on your weapon has a huge effect on your enmity!), there are only a few places in the game where the tank can lose aggro without it being his fault, most notably level 30-40 for Paladin.