I'm about to pursue my B.Tech from MSIT (CSE). I've heard that people in IPU don't get time to pursue other stuff like programming and other hobbies. Is it true?

One of my friends is a final year student at MAIT - IT. And here is some statistics provided by him, which I think will clear your doubts. 

• Several students from MSIT, more than even a 100, are seen to regularly participate in online coding contests. You check on Codechef to find out the ratings, participants, and various similar information. Apart from that, students actively participate in various other platforms like TopCoder, SPOJ, Codeforce, HackerRank, and more. MAIT has many great programmers. 
• You will encounter many such individuals on campus who are preparing for examinations like GRE, GATE, CAT, and more.
• The same students are also involved in several clubs and societies, besides initiating blueprints of their own startup. This is despite managing above 80% academically. 
• Students also engage in sports like football, cricket, badminton, and various others.

You can have hobbies and maintain your academic profile side by side. It depends on whether or not you are interested in accomplishing it.