Toheed Aur Shirk Ki Haqeeqat (توحید اور شرک کی حقیقت) | Hafiz Salahuddin Yusuf

Haafiz Salaah-ud-Deen Yoosuf is Head of Darussalam's Research Division in Lahore.
He was once in the past:

• Islamic Legal Consultant to the Federal Shariat Court of Pakistan, and
• Editor-in-Chief of al-I'tisaam magazine.

Darussalam distributes a duplicate of Riyad-us-Saliheen which, notwithstanding the genuine ahadith incorporated by Al-Nawawi, incorporates discourse by one Hafiz Salahuddin Yusuf.
The prologue to the accumulation gives no data on the pundit with the exception of that he had initially given discourse on the Urdu gathering. It doesn't go into any subtleties as to his certifications or training.
At the end of the day, it doesn't give any sign that this critique is any pretty much valuable than the editorial of any irregular client in the city.
Google looking gives by nothing aside from that he's from Pakistan (nothing unexpected, given that he's added to the Urdu gathering), that he's associated with the Darussalam Research Division (nothing unexpected, given this is a Darussalam-distributed accumulation), and that he was additionally engaged with Tafsir Ahsanul Bayan (likewise distributed by Darussalam). Which truly doesn't help but to propose that the editorial was an in-house work (which doesn't really reprimand believability, yet not the slightest bit reinforces it either).
Who precisely is Hafiz Salahuddin Yusuf? What experience/instruction/aptitude does he have that prepares him to give an editorial on such a great gathering? What, in the event that anything, makes his discourse in any capacity significant as well as valuable?