If they're so silly enough under the new mechanics to drop one big guy on the field with no support, then yes. Frankly, I think it's ridiculous that so many strategies work because the game mechanics do not work as well as they should.
I'll try to make a stretched M:tG analogy.
Imagine if both players only controlled two lands a turn, mana pools didn't empty, it cost 1 mana to attack your opponent, and your critters only did two damage a pop, no matter whether they were a big scary dragon or a little goblin.
Of course strategies that could afford to wait an absurdly long time would win in that case. I remember vs. Worthing that indeed I did assassinate his Zu. A turn or two later he came down with dragon zombie. Whoops, no more sin SSs, GG etc...
Sure I could iczer iczer iczer while he spams SP generators. I can get him down to 8 of 14 or whatnot. Maybe even assassinate his dragon emperor and get him down to 4 LP.
And then what? I'm left high and dry with next to no units, next to no SP, and him laughing his head off at the phrase "so close...but oh so very far"
I don't really get it...would it kill people to take one turn to plop down some sort of low-level immovable object? I mean if you're trying to rush Allind or whatnot, why not just plop down an Axeman, so as to even force the opponent to pay 1 SP?
Do bigs and primcloners need such love that we should just let them spam all of their SP gens defended not by their own file, but the game mechanics?
Nerf Elite Fencer. Change start skill to "target unit of agi 4 or higher gets AGI = 3. Then, this unit gets AGI = 4 for this turn and ATK +10"
For the great justice of the diverse meta.