Same on my mind. Let say you have to create an invoice for a customer and your operations stop just because your not using {Cario, Skia, PoDoFo, JagdPDF, Haru, Whatever} on the local environment but relied upon an external service which halted.
This introduces a huge dependency chain across the web. But they don't provide anything which cannot provided autonomously by a local library. Integrate with external services because you must and not because you can.
