[metacritic12]

Most developed countries (especially EU, but even USA) require that hospital take care of actual medical emergencies regardless of ability to pay or immigration status.

This is different than getting a doctor checkup or a scheduled surgery. For that you need to go home. But if you get into a car accident in the UK while a digital nomad, the process is probably the same as if you were a tourist.

E.g. NHS would take care of you, and sort the billing out later. And tourist insurance would probably even take care of you. For insurance underwriting purposes, being a nomad is a plus (other than customs law), because you spend all day in a library or WeWork, not bungee jumping or safari riding.

Of course, your point is correct that being on a tourist visa vs (say in the USA) a green card does cause a lot of headaches. Landlords will not rent long term to you. You cannot get a local job in case your main employer fires you (and you fall in love with the place). You'll have a hard time getting utilities, a bank account, etc.