As much as i agree with the above Gungir post, a good PT should inquire about that history prior as well as their/your goals. It's meant to be a collaboration.
An example of some things myself and other PT's have used are:
How/why/when/where did you injure?
Name your top 3-5 goals.
Top 3 activities you do that are being limited by your injury?
Expectations of therapy?
We can't keep you here forever so within 5-10 sessions we need to see improvement or discharge/transfer will be needed.
There's a very good chance as Gungir said they are sticking to the text book version of protocol. They need a baseline to establish what you're capable of. Yes, you can do a full push up, but how many? How slow and controlled? Can you do an anterior capsule stretch without being limited by the pec? What angles of stretch hurt?
Contrary to some popular belief, many aspects of rehab/restrengthening are not focused on what they should. There are instances where focusing on the eccentric phases are better suited than the concentric. So while you can concentrically do the push up, you might not be able to stabilize in the negative portion (i don't know as that hasn't been stated by you).
Ultrasound and massage/cross friction massage is good for eliminating scar tissue.
Rotator cuff movements are good for your injury as the pec is at times considered a partial rotator (it does have some internal rotation) and the other rotators can help with stabilization of the shoulder joint, as well as the girdle as a whole, taking some of the stress off the pec to allow it to heal properly. Since it aids in inferior and anterior scapular movement, having strong rotator cuff/scapular muscles will help keep the entire girdle in its proper position as opposed to developing a muscle imbalance caused by scar tissue/atrophy that shortens the muscle.
My suggestion is go in again and discuss some of these things suggested about your goals and history if it hasn't been already and show them your capabilities, you may need to skip phase 1 of pec tear rehab and move on to a more challenging portion of the program, as this isn't too uncommon or athletes.