playing battlegrounds and to a lesser extend arena (theres less chance of chaining there due to peels) is incredibly frustrating for any form of caster dps (bar afflict warlock) due to the sheer volume of interrupts, stuns, disorientation and silences in the game.
this is amplified twice fold when people have mouse over macro/scripts to use interrupt abilities on an enemy with less input than normal, so much so that when up against a pre-made (same guild and faction) you can spend upwards of 15 seconds being chain interrupted and in some rare cases multiple people will suffer this as well.
considering most classes have one “element” of damage outsource an interrupt is more or less a “shut up its time out time” while said person can continue to wail on you with no resistance since you cant trinket out of lock out.
in arena matches this is less prevolent due to smaller numbers and different priorities, but in battlegrounds being chain lockout back to back is such an infuriating thing it makes playing said class pointless. that is coming from a frost mage, one of the more instant cast focused caster DPS in PvP.
meanwhile a balance druid has the option of not only silence rooting someone so they cannot do anything for 5 seconds but they are tanty and have arcane+fire+nature as their spells so when locked out they can fall back on their other element as a backup meaning balance druid wins. oh AND THEY CAN HEAL WELL.