These threads are always the same.
There's always at least one poster who says "well, maybe they don't have SEN. Maybe they're just naughty."
Perhaps that's true. But personally, I would rather err on the side of acknowledging that it COULD be SEN and if there's a chance it is, then why on earth would I begrudge a child who will face so many complex challenges in his whole life, a certificate or a little tea party?
And I hope my dc have the same level of compassion and understanding.
Can you imagine how difficult every day life is when you're just 'different' in some way? The challenges that just don't exist for NT people.
OP, I think at 8, your ds is old enough to understand that people have different challenges and different ways of functioning and doing things, so rather than concentrate on who is being rewarded, he should focus on his work, his friendships, and enjoying his school day in a way that he thankfully can.