It is possible that the IELTS listening section has become more difficult over time. The goal of the IELTS test is to assess English language proficiency, and as language standards and expectations evolve, so may the difficulty of the test. Additionally, the IELTS listening section may have become more challenging to ensure that it is appropriately assessing more advanced language skills. It is important to prepare thoroughly for the IELTS test by practicing listening and comprehension skills regularly to keep up with these changes.