while i wont debate most criticism against that game but are we really going to pretend that scars didnt eventually become "T spamming"?
Being lenient with a first game is valid. And you're right; despite Scars of Summer being castella's what now? 3rd or 4th game? Yeah it is still not perfect, we could spend a whole day grilling it down for all its problems, specially in the actual gameplay mechanics. They still have a lot to improve and polish in their design for sure.
That said, there is also validity in saying that, if you're obviously copying a pre-established formula, then how come you do nothing (not even a tiny bit) to try and either improve that formula or at least put a little interesting twist on it?
Think of it this way: Imagine now that, because you've enjoyed Scars of Summer so much, you want to make your own version of the game. What would you seriously consider doing:
A) Just make a carbon copy that somehow has even more failings than the formula you're referencing;
B) Try to come up with a small interesting twist/spice to the formula, or at least improve upon one of the weaker points;
So yeah, for the case B there, I think it is valid to criticize the dev to a certain extent. One thing is making a 1st game that is unique or tries something new, another is copy-pasting but not even bothering to fix the glaring problems that the source material has.