Honestly I am still wondering why tf they brought magsafe back. I thought Apple had turned the corner on proprietary connectors. I charge my M2 air with a usb-c cable.
Two advantages for me: It's nice that you don't break the connector if you trip over the cable or put the laptop down on a soft surface, and it's nice being able to charge while still using both USB-C ports (although I guess 3x USB-C would also solve that).
I don't really see any downside to a proprietary connector if you also have the option to charge over USB-C as well.
I don't care much about MagSafe, but it is sometimes annoying to have to plug everything on the left. If given the option, I might pick the extra USB (which could also be used for data/monitor/etc. when not being used for charging, of course.
It's less stress on a frequently used port. I've got an early M1 MacBook Air where the USB-C port I always used for charging is starting to get flaky, presumably because it's been used so much and because of the weight of the cord + dongle hanging off the side of the machine.
Replacement port for M1 Air can be bought for around $10 off Amazon and installation take like 10 minutes for total newbie like me. All you need is right screwdriver.
I can't understand why they ever moved away from it.
Magsafe on laptops is so much better than any other option: zero force "insertion", convenient breakaway if tripped over causing no damage to either side. Magsafe is fantastic.