Agree, also as a solid bussiness accepting Doge as a payment is really a joke.
Dogecoin is not suitable for use in everything, because there are coins that are more valuable in terms of payment than using Dogecoin, because Dogecoin is a meme coin that can only be used to make jokes.
Hard to say but its suitable for some payment that need a fast and cheap transaction.
But yes its not suitable for a large amount since the price was really volatile.