Adding more payment methods is definitely key. But like the sibling comment says, they don't come close to PayPal's popularity. So its a reasonable fallback, but I wouldn't remove PayPal voluntarily.

Chargebacks are interesting in our case, since we barely get any and if we do, we solve any cases super quick. I remember a few years ago, I talked to some PayPal representative from their business team (so higher level, not normal support) and they mentioned how they had never seen an account with such a low amount of cases. Keeping that up is a big focus for us.