Saying "subtitles" is still far more effort than the one button press it was previously. It also takes no account for the fact that deaf people aren't all able to speak clearly, making the microphone button useless. Not a problem for me, forunately, but even with normal speech, it can sometimes still take a couple of attempts.
In addition, with TiVo, subtitles off or on stayed with whatever you selected. Not any more. Every time you change channel, it will reset to the default for your profile. My family would look at me like an idiot if I start shouting "subtitles" every time I change the channel!
Even the most basic of interface design hasn't been considered. For exmple, If you press three dots, scroll down to to Subtiles, click Ok. It then has the currently active option (eg English or Off) as the one selected, thus necessitating yet another needless button press if you want to change. The active option already has a tick beside it, no need to make currently selected aswell.
This is fundamental stuff and demonstates to me that Virgin give no consideration whatsoever to the user experience and view it purely as marketing platform and to look "pretty" over function. Think about how you get to your recordings for example, five buttons after have to view their Home screen with their promotions.