Right off the bat, that split has 6 days in a row with some kind of pressing movement. If you have any kind of funky elbow or shoulder, I'd reconsider.
Another big variable with these types of programs is how easy (or hard) push-ups and pull-ups are for you. That's going to affect the intensity per set and the soreness afterwards. If you can do 4 pull-ups per set, then 50 reps isn't an quick and easy workout. On the flip side, if you can knock out 40 push-ups in a set, 100 reps will be maybe 3 minutes of work and no big deal at all.
Chad Waterbury's PLP program gets into this type of plan. Waterbury also has this 3-week plan where you do 100 push ups and 50 pull-ups instead of your regular upper body work, 6 days a week. Like Pan said, Max Shank also wrote about something similar (daily squats and push-ups).
This is always something to consider. Why? Simple question with an important and relevant answer.
This too. When something seems "light and easy", the movement gets disrespected and that's when the grounds for injury can creep in.