And also, they can just bring back any animals that are made extinct by more advanced creatures. Like is currently being undertaken in regards to the woolly mammoth and that will be done for the thylacine.

They already have the technology to do this and they already have a genome for the Thylacine, the only issue is that the nearest living relative(the numbat) is more distinct from it than that is the case for the Mammoth and it's relative the Asian elephant. So the act of splicing the genome of the Numbat with the genome of the Thylacine requires more advanced technology, once technology has advanced to this point it will be possible however.