Totally. To back this up with a real world example, Apple screwed up the throttling of the i9 MacBooks originally, causing them to be over throttled. A software update that pretty much amounted to an MSR write on boot fixed it.
Why does Intel let OEMs play with that? It's to give OEMs a knob they can play with to balance perf and price for their segment. It lets OEMs cheap out on cooling (or go with new form factors like the tiny GPD models) and go with the low minimums, or have a full system that's capable of higher TDP like Apple's tend to be.
https://www.macrumors.com/2018/07/24/throttling-fix-2018-mac...
Why does Intel let OEMs play with that? It's to give OEMs a knob they can play with to balance perf and price for their segment. It lets OEMs cheap out on cooling (or go with new form factors like the tiny GPD models) and go with the low minimums, or have a full system that's capable of higher TDP like Apple's tend to be.