Resin printers are frankly, a pain in the ***.
not if you have a nice one like a FormLabs3 that auto-fills the tank and has resin cartridges. I rarely have an issue with my prints.
also resin prints are isotropic meaning strong in all directions. FDM or rather tube printers print objects that are inherently weak in the Z-direction. Warping rarely occurs if your print is properly designed. Certain resins used by dentists is not toxic.