I think this is not an entirely new "start-up" but rather an extension to the current DHL ops. By posing as a start-up they indeed try to locate pilots who will take lower benefits for the feeling of having been there from the start. DHL is a huge company and it will not hurt them giving what they will offer from the start. If people accept less now they will never get it later. Just look to the other big outfits around. Lufthansa's pilots have even been on strike to get bach what they gave 10 years ago, with record profit years in between for the airline.
Now, I'm not saying that if you should join a new little airline being started at your local airport to provide a service that has yet to be established and advertised and has to find its customers, that then you should not give this company a break by flying for less the first years, but this is not a bach country airport startup!