From what I can tell, cr. LK and cr. MK’s main purpose is to check your horizontal movement; if you try to step forward or back when you’re close enough, you’re not blocking low, so you’ll get hit. When you are blocking low, you can’t move, so you’re pretty much stuck in one place (which is bad if your intention is to get closer).
If you know your opponent is going to chuck one out, how do you stop it?
You could interrupt it, but that requires frame advantage/good timing;
you could reversal it, but a lot of reversals have poor horizontal range and may whiff (not to mention it’s really risky to just throw out)…
Focus doesn’t seem to work, as these pokes recover too fast. At best you’ll get a level 2 blocked, at worst you’ll get hit with lights or a cancel into special.
Whiff punishing seems extremely hard if not impossible; if anything I would throw this into the “interrupt” category since you seem to need to preemptively whiff punish instead of doing it on reaction.
Whiff punishing with walk forward > throw could work, but your spacing has to be immaculate, and the throw could be teched. And it won’t work at all against lights.
Jumping over would only work for HKs, as cr. LK/MK often recover fast enough to block.
It seems like you have to go through a lot of trouble to counter them, like there is not an easy “rock/paper/scissors” solution here.