Whose promise? According to tax and immigration laws that is certainly not the case in most of the world.
https://www.theladders.com/career-advice/how-i-perfected-tra... https://doist.com/blog/travel-remote-work-digital-nomad/ https://www.refinery29.com/en-us/remote-work-digital-nomad https://www.thebalancecareers.com/working-remotely-while-tra...
etc
Here's a US tax attorney talking about it:
[1] https://www.chiangmaicitylife.com/citynews/general/immigrati...
[2] https://about.gitlab.com/handbook/people-group/global-compen...