The great thing about USB-C chargers, unlike those old terribly made MagSafe ones that fell apart all the time, is you can use any third party charger you want if you don't like what Apple includes in the box.
Personally I am blown away by the battery life in my MBA. I feel no battery anxiety. My prior MBP 2015 only had half its original battery capacity and on modern software it'd last maybe an hour and a half if I was very very lucky. With the M1 MBA I can browse in Chrome, listen to music, chat in Signal and Telegram, have Transmission running in the background, and it will still only reduce by 10% max within 3-4 straight hours of that type of use without any break.
So personally I don't see the need for a faster charger given how crazy long the battery life is. If you do want faster charging, you have the option to get a higher wattage USB-C charger from a third-party for less than Apple charges.
A lower wattage charge decreases stress on any li-ion battery, which is why "fast charging" wears out a battery faster on any device using lithium batteries - laptops, smartphones, electric cars, etc.
The MBP includes a higher wattage charger in the box because it has a physically larger battery than the MBA.
I have used a 65W charger on my MBA just purely out of convenience because I have a Lenovo one that came with my company issued Thinkpad lying around my desk already. I did not notice any subjective difference in charging times myself. But again, actually trying to run down the battery on this thing in the first place is a mission so I'm only ever "topping up" the battery and as we know, the first ~40% or so benefits most from "fast" higher watt charging while the rest of a charge sees only minimal gains in charging speed. This is again true for any lithium battery no matter what it's in whether it's a MacBook or a Tesla.