Would research internship experience lower my chance of getting a technical job?
I can answer this question from my undergrad experience and work ex in India. 

Short Answer: No, having research experience doesn't hinder your chances of getting into a technical job. 

Long Answer:
Having a good research project/internship demonstrates your deep thinking abilities and capacity to do challenging work often with minimal guidance. Good companies often admire these skills. In addition to this, research internship along with good implementation part(CS specific), count heavily to your favour.

The advise of your college senior (without any offense) is directed primarily towards service sector companies and is misleading. The reason is not that your research internship would not give you proper skills for the job, but that your research experience may give them an indication that you would leave the job for higher studies. There are many other factors such companies consider for minimizing the attrition rate and maintaining high reserve manpower, and research experience is certainly not at the top of that list.