If your team is letting priests mana burn all your healers uninterrupted, then you're the problem. Not mana burn.
And a Holy Paladin complaining about the one ability that is an actual threat to your mana? I assume everyone wants to be invincible.
Mana burn is a situational spell, if you're being chain mana burned then your team or you need to do something.
That means:
a) To little pressure on the other team
b) Tunnelvision
c) You're not LoSing
d) Your team is forced to play defensive
e) All of the above.