Trying to punish PPP/3PP is a nightmare. Especially because it's -8 so it's only just punishable with a 7 frame throw. If you react only one frame too late you're already screwed. >_<
I do the same. The downside of this is that playing online actually kinda 'unlearns' you to throw punish, which is one of the reasons why online interferes with offline performance.
That's why one has to force itself to do throw punishes,even if the end result might be a Hi Counter in the face,letting free damage go away is worse than trying to mount a pressure after blocking(whether if it is successful or not).
If a player goes to offline events,than online's nothing more,but one of the ways of getting in some training,but even then,online shouldn't be taken 100% seriously.