I think the current air pollution deaths of fossil fuels (several millions per year) are roughly an order of magnitude higher than even expected climate change deaths.

Many of the big estimates of death rates in say 2100 combine the air pollution of continuing to use coal and combustion engines with heat and climate effects.

The good news is that we have cheaper, better, cleaner options for the vast majority of that fuel burn today and they continue to get better, cheaper and cleaner. There's a clear shift in the market, it just takes time to work it's way through.

But if your kid has asthma today then that is probably doing more damage to them than climate change.

Of course, to state the obvious, both problems have the same solution. Stop burning fossil fuels.

There are even more reasons to phase out fossil fuels.

They are non-renewable, meaning the more we use them the more we have sunk cost in an energy infrastructure that in the long term can only get more expensive and more scarce. That's the opposite of what you want. It also means there's hard limits to how big they can scale, and the more you scale them the worse their scaling gets. Also the opposite of what you want.

They are geopolitically problematic and bind us to foreign conflicts.

Many of the most virulently anti-American and anti-Western ideologies (like fundamentalist radical Islam) are propped up and funded by petrostates. Domestically a lot of authoritarian far-right ideology (which IMO is also anti-American if you think America should be a free country) is funded by the fossil fuel industry. The term fundamentalism comes from a tract called The Fundamentals published by an oil baron.

Many, many reasons to phase out fossil fuels.