It is supposed to have 360 degree camera visibility - though given the constant presence of UAVs in Ukraine, 360x180 would seem to be needed.
I know from experience that being inside a fully buttoned up turret as a TC makes it difficult to see, even with periscopes all around, and to keep oriented on the vehicle's movement. Just driving becomes a challenge, let alone fighting.
I remember a CMTC rotation back in 1998. My Bradley company was attached to a tank battalion. We were doing an attack mission, and my company had opened a breach in the OPFOR main obstacle complex for the follow on tank company.
Watching the God's eye view in the AAR, you could watch the nice, organized formation of that tank company moving down the British Cut disintegrate as soon as the OPFOR hit them with gas and they had to button up. They didn't lose any tanks, but they just couldn't drive very well because the TCs couldn't see.
In any case, the T-14 Armata is, like a lot of Russia's supposed cutting edge weaponry, fielded in such small numbers, if they're even in operational service, that they're pretty much vaporware.