Because the mass isn't always the brightest. Also, "arguing" implies that people present arguments, which no one really does. Most people just flame about how he should just leave the BST in question be and do something else meanwhile, which isn't always an option (and is no argument against it). Others said stuff like "We need it because we suck otherwise" which is neither true, nor an argument for it if it was. And that was the only thing I heard people say against it.
Being physically invincible over such a long period is poor design imo. Explain how it makes sense to have an absolutely invincible pet? How is that, in any way, logical? I honestly can't imagine it. When someone gets hit, they're supposed to take damage. They should be able to reduce that damage, that's what Defense and PDT is for. But be immune to it? That's a bit of a stretch. Just look at how many mobs and even mob families completely lack magical damage attacks. All of those (including high tier NMs) become easily soloable. NMs, that, for that matter, shouldn't even be easily killable. I just fail to see the sense in that. Obviously SE does, because they gimped SMN but not BST and PUP.
And yes, it is 100%. Death Scissors deal upwards of 2k damage. Assuming x/1024 distribution (which, to my knowledge, is the finest grade distinction in all of FFXI's calculations), even -1023/1024 PDT would mean Death Scissors would deal at least 1 point of damage, but I've seen it hit Nazuna for 0 more than once. Also, what does it matter? 99% would still be implausible.
Holding mobs is a whole other issue, the fact that this kind of damage reduction alone is possible is wrong imo. I'm a SMN too, and I'm still glad SE nerved them for that. Why they didn't think it should apply for other pets too, though, is beyond me.



