Is this correct - A very important point is that debit cards offer consumer protections (chargebacks for unsatisfactory goods) - I was under the impression that only credit cards offer chargeback protection?

You can chargeback with a debit card

https://www.chargeback.io/blog/debit-card-chargebacks-guide

Liability is covered under the Electronic Fund Transfer Act

> You have zero liability if you report before any unauthorized charges are made. Reporting within two business days caps your liability at $50. However, if you wait over two business days but less than 60 calendar days after your statement is sent, your maximum liability jumps to $500. Beyond 60 days, you could be liable for all unauthorized charges.

It is correct. All Visa and Mastercard debit cards offer these protections, and I would suspect that the smaller brands also do.

Worldwide.

You can chargeback sepa for longer than cards. And easier