You can check numerous older topics on the points of uploading casual observations, it’s completely up to you to do that, sometimes they’re useful to know the host for wild species or the origin of escaped specimens, and of course if you lack date, but know the location, it’s a nice greyed out observation, same with photoless ones, but if you consider what to spend your time on observing, wild specimens will always win. https://forum.inaturalist.org/t/what-is-the-point-of-casual-observations/9146
Escaped animals are of course wild by iNat definitions. https://www.inaturalist.org/pages/help#captive
https://forum.inaturalist.org/t/what-makes-a-sighting-casual-and-other-related-questions/4868
To question about cv: https://forum.inaturalist.org/t/casual-observations-in-the-cv-training-set/35558