The list is a bit overkill for the normal person. I would suggest just:

- Have a local backup (simple giving the storage prices)

- Pay for one email provider (less chance to ignore you)

- For important services (bank, etc.) always register also a telephone number / second email if possible (there is a low chance that both primary and secondary thing will be blocked at the same time)

I’ll extend this, seriously, to the 3-2-1 model. It’s all fun and games, rhetorically, until someplace burns down.