Assuming you use your paper wallet in the correct way and sign your transaction offline, there is no need to create a new paper wallet every time you make a new transaction, unless you want to use a different change address due to privacy reasons.
You're technically right. Though this is something I don't expect the typical person is capable of doing correctly. Most people are simply a lot better fit to use hardware wallets.
Strange, am I the only newbie that started her crypto journey using paper wallet? The first wallets I created for BTC and LTC are paper wallets, later when I decided to move into altcoins I still went for altcoins that uses paper wallet, Electroneum was on of those altcoin back then, I just find paper wallet to be easier to use.