Yes, in Quordle you're compelled to use a standard opening. Regardless of what you learn from early guesses, no followup can be more informative than just querying more letters.
It's kind of disappointing to me how much luck is involved in Quordle. I've just established that the only common letters in a word are S, A, and Y, with A second and Y fifth. All three other words are already guessed. Do I guess SASSY or SAVVY? The game gives the appearance of being much more skill-based than it actually is.