Is it permissible to watch videos of non-Muslim YouTubers and benefit from their useful content, while avoiding parts that contain blasphemous words or contradict Islamic law?

A Muslim must avoid gatherings where the sacred limits of Allah are violated, and should not return to them unless those present cease their reprehensible acts. Allah states: ﴿And when you see those who engage in [offensive] discourse concerning Our verses, then turn away from them until they enter into another conversation. And if Satan should cause you to forget, then do not remain after the remembrance with the wrongdoing people. And there is no accountability upon those who fear Allah concerning them, but [only] a reminder that perhaps they will fear Allah.﴾ [Al-An'am: 68].

It is not permissible to willingly attend gatherings of reprehensible acts unless there is a necessity, because one who attends such acts is like one who commits them. Content containing reprehensible acts may be viewed if there is a legitimate need that cannot be obtained from another permissible source, provided that one avoids watching or listening to the reprehensible acts, and follows Allah's saying: ﴿until they enter into another conversation.﴾