Let’s be honest Mx2 is not meant to be ‘easy’, a hard exam is therefore just a good test of the content. Plus everything’s relative half the trouble is time pressure, plenty of 2020/2021 people would have said the exact same thing after their exams too.
I reckon hard vectors, some vector proof or something. Vectors has hardly been tested to full extent yet, predicted it last year but never happened so any year now.
It’s offered at certain schools depending on the child a lot of the time. You don’t “miss out” on the year 11 content you just start it a year earlier with the cohort above so in effect skipping the year 10 syllabus content.