Some people could disagree with this statement as it demonstrates how to keep Torah law today. An example of this is that from the Talmud we can learn principles such as answering questions like whether an anorexic person in recovery should fast on Yom Kippur and other complex matters. Moreover, the Talmud is still relevant today because it explains the rationale and philosophy of the laws of the Torah which are not explained in much detail or any detail at all, such as Tefillin or Kashrut. It also helps Jews to put the Torah into practice and tells us exactly what we need to do in our lives to fulfil the demands of the Torah.
It is full of thousands of years of Jewish wisdom and it would be putting aside tradition to simply discard it for more modern methods of understanding Torah. It is also considered hugely important in Judaism because it is studied extensively in Yeshivot and is used by rabbis to understand principles of Halacha (Jewish law). Therefore it is still somewhat relevant in modern day.
However, others could agree with this statement as it was written in ancient Babylonia by a bunch of old men so it is hard to adapt into our lives today, since their lives were so drastically different to the lives we live now. The 39 melachot are considered to be mostly archaic such as the ones relating to farming, which may have been a common thing then but is now only done by actual farmers.
Also, it is extremely difficult to understand as the Talmud is written in a lost language, Aramaic, which has been barely used for centuries, therefore making it inaccessible for Jews in this day and age and thus absolutely irrelevant.
In conclusion I believe that the Talmud is still wholly relevant today because it helps explain some of the most important things left unexplained in the Torah and we would be completely lost with no idea of how to go about doing the things written in the Torah without the