Just my opinion of course.
And it's a perfectly valid one and raises some good points, that I agree with.
You can cook perfectly acceptable BIR dishes at home on domestic hobs that taste to a large part as if they have come from a BIR takeaway.
However, depending on how discerning you are with regards to your perception of flavour and taste they can lack that final n% that you get with BIR food. Many have described this as the final component in the BIR jigsaw that home cooked dishes lack and it's this smokey almost unami flavour and taste that they lack.
Some of us have conducted experiments on high output gas burners to try and achieve this final n% smokey flavour and the general concensus is that you can achieve it with a high output gas burner as used in the majority of BIR kitchens. CA and Jerry have documented this in the links I provided earlier.
But I just want to reiterate this point. You don't need high output gas burners to produce perfectly acceptable BIR food, you do if you want to achieve the full range of flavours achieved in BIR restaurants.
It all comes down to how discerning you are and whether you can taste that smokey flavour and how important it is for you to achieve it in your own dishes.
The photograph I included was an example to show just how many gas jets a typical high output gas burner has compared to a conventional domestic gas hob jet. I'm not suggesting that all BIR's use that particular type or at that heat level.