I sometimes read online that unapproved third-party chargers can cause damage (bloating, shortening the battery life, lowering the battery's maximum capacity etc) to the battery of an Apple device. That's why there's a standard of "MFi" on some chargers. Given that USB-C is a new technology and is more advanced, is it safe to charge, without causing damage to the battery, an iPad or iPhone with any USB-C port?
And as a follow-up question: is it safe to charge, without causing damage to the battery, any Apple device as long as I'm using a charger that came with an Apple device?