With a full party you can take the frogs and crocodiles at level 2. You might have to crack a resurrect scroll or two, but you can do it. They are tough fights to do early in the game. However, they are just that: Tough fights. You can win them. You can't win against stunlock.
There is no "git gud" when you step into an area and just watch as your party dies while unable to do anything for 15-20 turns. There's just reloading your last save and not going back there until your characters are much stronger and probably won't get stunlocked.
Now, there are some fights that don't involve stunlock that are pretty much impossible if you're not leveled/geared for them. However, that's where the Flee option comes into play. You realize the fight is beyond your ability, so you flee. But you can't flee if your entire party is stunlocked. When stunlocked to death, your only option is to reload.
The problem comes down to the fact that stunlock exists. As I've said before, I have problems with stunlock on both sides of the table. Stunlocking enemies is too easy, and being stunlocked is too big a risk factor. Stunlock in either case isn't fun or interesting. There needs to be a system in place to prevent stunlock.
Do note that I am an advocate for making the game harder, particularly in regards to the AI, as it makes some boneheaded mistakes and I was not ready for Arena (turns out I'm not the master tactician I thought I was; I got mopped). Stunlock doesn't make the game harder. It makes it dumber.