Yes you can, you're only considering an apple branded magsafe charger when third party versions exist that require you to do the same research(its usb c to magsafe, even if the magsafe connector is standardized the rest of the cable and usb c connector may not be). The same goes with lightning. That would be like considering samsung usb c chargers as the one and only cable you can buy. These aren't really problems that actually exist, you can very easily find a high speed reputable type c charger, if Apple is forced to support type c then you'd also be able to just buy apple's type c cable if you dont trust another brand. My problem with lightning is that only iphones use them, the ipad, MacBook, etc use type c, it works on nothing else so it becomes ewasye should you switch to a different phone(the longer they force lightning the more e-waste is produced). On top of it lightning is a worse cable than type c, it cannot support the power delivery and data transfer that type c can, its just overall a worse cable. Apple switching to type c doesn't make an iPhone less apple, it just makes it a better device with a cable that can be used for more than one device.