Most 8yos would be able to play outside afterschool and not have to come in and do at least an hour or more of math HW.
Not around here. Both gt and non-gt parents complain about the volume of homework at our school. We have the same deal as many others. Mind-numbing worksheets, weekly spelling/vocab packets with an activity every day, daily reading commitments and long term projects mean that most kids at our school have had 1-2 hours of homework per night since first grade.
I made my oldest do everything and demanded high quality work. Over the years, my mindset has shifted dramatically. For meaningful, homework, I still have high standards. If a homework assignment seems repetitive and asinine, I've told my kids that these assignments merit "good enough" work. It has led to conversations about determining what work is important/relevant and what work is busy work that you can hustle through.