You may not have had them turned on already or you didn’t notice they were turned off after the upgrade because you don’t use them. At least Microsoft documents the incompatabilities so you know it is supposed to be that way (IE11 is designed for Win 8 and not Win 7).
Thank you very much for (not) documenting exactly what “features” you seem to be referring to that need to be “turned off” in Win7. Thank you also for (not) referencing the Microsoft knowledge base article that admits these incompatabilities.