No not exactly. In general its pretty much a fact that protoss Players dont whine that much in comparison and therefore not Posting ridicilous Balance complains that often. Look at this Daily bc is op Post 
there are some aweful protoss whiners yes. But nearly not as many.
Toss generally know how it feels like to get sh!t on balancewise and accepted their fate. They know that no one will accept a State of Balance where protoss is in a slightly better spot. Like Good old incontrol explained: These Lasers man! The protoss hate concentrates on the deathball in wol. Where protoss army was indeed stronger and easier to micro.
If You propose to zergs that winning over 70% of the premiers with Different Players might indicate that zerg is too strong You will get sh!t on like there is no tomorrow. Now they feel like their race is completly screwed. Want buffs for ultras mutas and whatnot
Now the protoss whine has increased because of miserable results of recent tournies. Like no toss in ro8 for example.