None of us does the same workout. Even if we do the exact same exercises in the exact same order, we are different humans so our workouts are not going to do the same things in our bodies. What this means is that we have permission to modify. Heck, maybe we even have an obligation to modify.
This is where I point out that modifications are not static entities. For example, sometimes we modify because a particular version of an exercise is not appropriate for us at the moment. As we continue to work on that exercise, we need to modify our modifications.
Safety modifications can be either temporary or permanent. Those of us who become pregnant need to make some adjustments to keep ourselves and our future progeny safe before returning to business as usual afterwards. (Note: afterwards will not be the same body as before and this is all good.) On the other hand, when we receive a diagnosis of osteoporosis, we need to change our workouts forever to avoid spinal flexion.
No matter why we are modifying, the point of modifications is to make our workouts work for us.
We can do this.