I don't think he was forcing it to Dez. I think Dez was the read, but Dak is still figuring out his timing and ball placement to Dez. Dez was open a lot, but Dak was off in a few cases and just didn't have enough time in others. Some of those were route options or site adjusts where they were just not on the same page. The square in that the defender sat on the route so Dez adjusted it deeper, is something Romo would likely have adjusted to. The endzone throws, the first should have been high and outside backshoulder, the second he under threw the fade. I think they will get most of that corrected in practice.
The Eagles were playing what looked like 9 guys in the middle of the field and constantly dropping and bringing different guys so the reads were on the outside and deep. They looked like they were trying to defend the first 10 yards and make him go over the top for his throws. Add that they were running stuff that Dak could not have prepared for, since it was not on film, it makes things tough for someone who is a rookie and has relied on studying and practicing against different looks and knowing what to expect. So he was confused and getting pressure. When he started to scramble a little it opened things up for him.