I can answer this solely from a McKinsey perspective.
Be aware that frameworks were applicable in the 2000 years, the era of Victor Cheng and Case in Point. McK has long caught up on this and the cases you will get during the interviews are tailored in a way to test your creativity and ability to generate insights, not remember specific frameworks. Cheng was in McK before the year 2000, Cosentino never saw a consulting firm from the inside.
They both have contributed a lot and are definitely OGs when it comes to consulting case prep, however, their usefulness for McKinsey and BB has diminished over the years and could potentially even hurt candidates for McK interviews.
This is very much in line with the change in client problem's that the firm is facing. Over the last years, they have become much more diverse, complex and a cookie-cutter approach just doesn't cut it.
For instance, think about this actual McK case prompt: Our client's check-in machines break down at different rates in different locations. What potential reasons can you think of that could cause this?
Now, what framework would you apply to this?
- provide a wrong sense of security that will translate to stress once you figure out how your approach won't work during the real interview - I have seen this so many times...
- keep you from learning what is really important in a McK case interview, which is the ability to build issue trees, interpret charts, and perform math no matter the context, industry, or function of the case. You want to learn to think like a consultant, and not to memorize things like a high school student.
I have built my coaching around these pillars, teaching people how to approach McKinsey case questions, and demonstrating the effectiveness by providing actual McKinsey cases during the sessions to solve while steering clear of any framework templates. The success rate and reviews speak for themselves.
As for T2 and other firms, you might very well still get cases that can be solved with a typical 'market entry' framework or else. For instance, in Kearney, 7 years ago I still received a case that was taken 1 to 1 out of a Squeaker case preparation book, while McKinsey back then was already employing the more creative cases. Not every firm puts the same emphasis and rigor on candidate evaluation and assessments.
If you want to read more about this debate, I have written an extensive article on it here: https://strategycase.com/case-interview-frameworks/
Hope this answer helps!