Do I really need to learn all the new modalities such as IFS, EMDR, DBT, etc. to be a successful therapist?

I am new to private practice but graduated with a master’s in counseling 20 yrs ago. All of the clinicians I work with at my group practice that are straight out of grad school constantly talk about using IFS, DBT, etc. in session. Those modalities were not in practice when I was in school. Am I doing a disservice to my clients by not being skilled in these areas?