[john70t]

Not sure what we are looking at. ?

It looks like drywall on the other side ie the outside of the house.
(There is no stamping so it must be a different sheeting material.)

There is no insulation shown so it must be "unconditioned space".
Any installed door to livable space must be insulated and airtight.
Make sure it vents to outside and is sealed to the inside.

The rafters should be now taking ALL of the heavy vertical load.

The 1x6 is there to help triangulate. Good. A minor thing but it helps.
These improve shear strength and are not used commonly enough.

Adding a 1/2" or 5/8" sheet of plywood on the right will do the same thing. Use external rated screws. 2.5-3" should bite deep into the studs.
It might need to be open top/bottom to ventilate when against a cold wall. IDK the situation.
Do this before opening the hole.