One thing to bear in mind about the current Y13 is that they didn't sit GCSEs and had a massively disrupted KS4. Many of them came into sixth form with huge gaps in their GCSE level knowledge, which means teachers have to go through the course more slowly and leaves less time for revision at the end of the course.
Many of them don't have the effective revision strategies that students in Y11 now will be developing for GCSE, and I think a lot of them still believed even up to about February that their exams weren't really going to happen.
I'm not sure it's useful to compare the current Y13 with other year groups and what they needed/didn't need to do. IMO, as teacher, I think they've had really poor preparation for their A-levels, and could do with some kind of special consideration like Y13 got last year. Don't forget, as many students take gap years, they'll be competing with students for uni places who were given advanced information. They'll be competing with students in the job market who got TAGs, which we all know were inflated.
I do think schools have to find a balance, and of course it's not a good idea to put too much pressure on students BUT equally, if schools went down the route of "don't worry, it'll all be fine", they would be letting the students down. Especially this specific cohort of students.
FWIW, our expectation at sixth form is an average of 4 hours of study outside of lesson time per subject each week. The students have 6 hours a week of contact time in school- so that's 30 hours for 3 subjects, plus travel time etc. They also have tutor sessions etc in school. So it's probably normal for them to spend about 8 hours a day on school related activities, and it's sensible to keep this up over Easter.
Yes, students need breaks- and I encourage my students to take a few days off BUT they shouldn't take the whole easter holidays, or may bank holidays, or half term off revising as it is nominally "holiday"! They will have 3-4 months away from academic work over the summer, after all!
I teach a science subject, and there is so much content to remember, and the mark schemes are incredibly picky. To get an A/A*, you really do need to be self motivated, and I know my most motivated students will be doing more than 8 hours a day. Ultimately, A-levels are competitive, and in most subjects there is no short cut around doing the work.