So, out of the 54 people under 40 that died (~0.25%), 38 had significant other issues. And only 10 (~0.05%) were otherwise healthy people.
I’m tempted to agree with OP that it seems like it’s more of a bad flu for younger people.
Of course, it would be interesting to know how many of those younger people actually needed medical intervention to save their lives. Maybe the death rate amongst older people is so much higher because doctors prefer to treat/save those that have a chance when hospitals are overwhelmed.