For some time now I've been researching how to become a digital nomad and legally optimise my taxes.

There are numerous services that claim to be able to help with this, here are just two examples that I found:

https://taxhackers.io

https://denationalize.me

Does anyone have any experience of this and can tell me if it really works and is legal?

Also, why do they charge so much when there are other services that can do this for much less (e.g. Stripe Atlas: https://stripe.com/atlas)?

I am thinking of moving to Thailand, but I do not want to be a perpetual traveller. Can setting up a US LLC as a non-resident (or a UAE free zone company) be considered "foreign sourced income" without being taxed even if I am a tax resident of Thailand (>180 days living there) and what experience can you possibly share if you have tried something like this before?

What additional advice can you give me and others to make this a great trip instead of a nightmare?

Thanks for all your input and a healthy discussion on this topic!