It's not crazy, it's just that leaving your country is the first mandatory step before doing anything. And leaving your country means taking your family with you.
An example: a soccer player went to play in the UAE for 3 years leaving his familiy in a EU country where he was resident, he moved residency to dubai, stayed most of the time in Dubai and when he came back the tax authority claimed that he was still considered resident in that country as his family never moved and thus it's center of interesr was italy especially since the UAE has
no tax. Litigation is ongoing.
A TRC is especially useful when you go back to your country and move money into your home country, to prove your residency in the UAE, but the main thing you have to prove is that you weren't triggering residence in your home country. Exiting properly is fundamental.