Keep in mind that Easy has two very different effects depending on whether the card is "new" or in "review". For review cards, Easy is just a multiplier on the duration/difficulty. For new cards, Easy immediately ends the learning period, and converts the card to a "review" card.
For language learning specifically, I've seen people recommend specifying a longer set of new card steps, which serves to keep them in learning mode longer before switching to review mode, and gives you a little more control over that process. If you're doing that, you'll definitely want to avoid pressing the Easy button for any cards still in learning mode.
Keep in mind that Easy has two very different effects depending on whether the card is "new" or in "review". For review cards, Easy is just a multiplier on the duration/difficulty. For new cards, Easy immediately ends the learning period, and converts the card to a "review" card.
For language learning specifically, I've seen people recommend specifying a longer set of new card steps, which serves to keep them in learning mode longer before switching to review mode, and gives you a little more control over that process. If you're doing that, you'll definitely want to avoid pressing the Easy button for any cards still in learning mode.