Hello everyone :)

I have a friend who is also studying for her LSAT, and while I am taking this online course, she is taking a course taught by a professor. Her professor said that the LSAT has changed over the course of the years - that it has increased in difficulty for the logical reasoning sections and decreased in difficulty for the logic games. Assuming this is true, are the practice tests offered in this course rendered... Less accurate somehow? I understand they offer the baseline understanding of how to approach problems and solve them, but if the logical reasoning sections I have been practicing with are somehow easier than more recent sections, does this mean that my scores on here will be a bit skewed?

All in all it was a disheartening conversation haha, and I'm inclined to not take everything her professor has said at face-value, but since then I've been chewing on this problem. Should I perhaps be mixing in more recent practice tests with the ones offered here for a more accurate estimate? Have any of you heard the same thing, or am I just late to the party?