PLAYING TO W1N The threat of this tech isn't (IMO) from a jumping attack, as if the jump attack hits you could just full combo anyway, but instead the threat comes from a grounded Corp Charge. If the CC is blocked the Probe is covering your ass from a punish anyway.
I'm not so sure that the Probe would actually be able to make Corp Charge safe.
The issue is the Probe block stun STILL does not stack on if the opponent is already in block stun. I thought this would be changed when the patch notes stated "probe hits now ALWAYS cause a reaction".
However, I tested this out by throwing out a probe, doing a 22 on a blocking enemy (the probe hits immediately after the 22) and an enemy set to reaction was able to punish the 22, which is negative on block, even though the probe hit immediately after, and probe is around +20 on block.
I'm guessing it must be something with the game engine, because if you Corp Charge a blocking enemy such that they are pushed back into a gravity-mine immediately after- and need to block that, they can still punish corp-charge with pretty much anything, because the +20 block-stun from the mine doesn't count, and Lex is still as negative as any naked Corp Charge that is blocked.