Actually, whether you're using 90cm or 6ft, it is still an "offence" (that goes against government's interests) for MCMC.
In most scenarios, if you are using an
offset dish antenna (even if it's Astro's 65cm dish, or 90cm), neighbour won't immediately identify it as "big parabolic dish" cuz it doesn't look like it.
Let say you are an individuals subscribed to Videocon d2h, and you're using 90cm dish to receive it in Klang Valley area, most people will still identify it as "Astro dish" cuz from far, it does look like an ordinary Astro dish, and they can choose to use a black colour dish (same black as new Astro dish), or if they're creative enough, they can spray the "astro" logo on their 90cm dish so that people will think that is an Astro dish.
Shhh, keep this a secret. But if it's 6ft dish like that guy (on the news), it is called
prime focus dish antenna. It looks big, and it can be spotted easily by anyone passing by your area (provided if he is so busy body to look around for satellite dishes, but ain't nobody got time for that

) if you do not hide it properly.
You can't get any China channels from C band by using 90cm dish. You need a recommended 6ft dish size to get China channels (C band). If we can get China channels from C band by using smaller offset dishes, many Malaysian Chinese will do it long ago.