Deel is one of the reasons why my policy for working for foreign companies is "B2B or I'm fucking off". Everyone I know (employees/contractors using it, not the other side) who went for it hated and regretted it.
Singling out Deel because you brought it up (and I ragequit after reading their "deel" and consulting it with a local lawyer), but I have the exact same story for every employer of record I've been involved with here in EU, and I don't know a single person who's been happy with them either (again, all employees/contractors).
I understand that it's comfortable and convenient for the employer (presumably, or at least the perspective of outsourcing this and reducing liability outweighs everything else), but these companies absolutely do not know what they're doing wrt local laws.