No. Those were all presented as scheming bureaucratic windbags, and were painted in neon negative for everyone that didn't get the hint.
If there was no agenda we would have seen something like a measured logical take on why you shouldn't cure the genophage.
Mordin explained it rather well in ME2.
Incidentally, you never really get a sufficient explanation why all his reasons from ME2 became false suddenly.
(the claim that the Krogan were the only ones able to stop the reapers is also false. At best they could have held back ground forces a little longer.
No race was strong enough to even put a dent in the true strength of the Reapers.)
Your view of them as bureaucratic windbags is subjective. Someone else could just have easily saw them as shrewd and practical people. This actually highlights your own bias against politicians. The choice of not curing the genophage is ruthless but practical, exactly like they are. Why would you go for this option if you don't share their views? I sense some self-insertion cognitive dissonance here.
Why you shouldn't cure the genophage was explained in all three games. Even by Mordin himself in ME2.
When you ask him about why he changed his mind, he rather emphatically says "IT WAS A MISTAKE". We don't know why, nor should we. Perhaps the end of the world broke his resolve. Who knows?
Nobody is claiming that the Krogan were the only ones who could stop them. The argument was that we needed the Krogan and they would not help us in their fatalistic nature unless we helped assure a future for them to fight for.
Why did we need the Krogan? Because when you're faced with extinction you go for any advantage you have and nobody denies the military power of Krogan.
Even the Dalatrass admits it. She just wants you to THINK they were cured so you can manipulate them into helping you.
Again, that's how a practical mind works. That's how anyone who would not want to cure the genophage SHOULD think if they want to be consistent.