well, to be fair, almost no one used counterspells back then because of the many failure points, clunkiness, and the high chance of it being a complete waste of your turn. Better to just cast your own fireball first.

Thats pretty similar to what 3e (and iirc older) counterspell did. You had to cast the same spell in reverse to counter a spell. So to counter spell a fireball, you had to have a fireball prepared and “counterspell cast” your fireball. That said, there was some action economy problems in 3e that made it not worth it (you had to use an action to ‘ready’ a counterspell on a specific target, when the target cast a spell, you had to roll to identify the spell, and if they cast a spell you didnt know or have prepared, you were out of luck)

for what its worth, the new (2024/2025) monster manual supposedly has spellcasting monsters with more “magical” actions built in. While they do still have a list of spells, they have more built in tailored “magic action” type things they would be using instead of spell casting in most scenarios, like having a “magic bolt” type attack for a mage or something. We don’t exactly know how extensive this is yet, since we’ve only seen previews so far, but it could make running spellcasting creatures a bit easier.