We won't be in a post-apocalyptic hellscape in 10 years if that's your measuring stick for negative effects.
From the scientific models we have, we're pretty much screwed. From the measurements we make and compare to the models, it appears like the models are optimistic.
What's sad is that people like you now say "it's not as bad as they say" and 20 years from now you'll be the first ones to say "we didn't know, why didn't they tell us?".
I mean it's gradual up to a point, but when you can't survive anymore, it's not like you can ignore it.
> and the coping strategies will develop alongside.
Such as "drill baby, drill!" and tariffs :-).
> Realistically if this is a problem it's my adult grandkids at most or great-grandkids who it would begin to impact.
It's already impacting us. We are measurably living in a mass extinction that is happening faster than the one of the dinosaurs.
The way it's going, GenZ (probably millenials) are more likely to die from this than from age. After having lived in global war times. Anyone in their thirties or less being anxious about their retirement are missing the bigger problem they will be facing at that age.
Personally I think lying about the timeline just gives ammunition to climate denialists because each time it's rolled out it creates a data point a denier can point at and say "look nothing happened".
Realistically if this is a problem it's my adult grandkids at most or great-grandkids who it would begin to impact.