Those moves I mentioned both have 30+ frames of startup and leave Ryu at least +6 when you parry them, you’ve got enough time to land Ryu’s biggest punish combos that start with MP and cr.HP. Some other similar examples are Mika’s charged HK, Zangief’s charged HP and Ken’s heavy tatsu.
You might notice that all of these moves can be used as predictive punishes for Ryu’s fireball. Ryu’s V skill seems to be specifically designed to complement his fireball game by giving him unusually strong punishes against moves that avoid fireballs and are safe on block.
There is some potential for using it as a counter to an opponent who is using predictable pokes, but I think that’s definitely a secondary use and not a tactic I expect to see people rely on.