If you still rely on this tablet for daily casual use—yes. The security patches alone make it worthwhile. However, if your tablet is stable on an older build and you use it infrequently (e.g., only as a photo frame), the update is optional.
Since Huawei's OTA servers for this model are offline, you cannot get the update automatically. However, you can manually flash the final firmware. huawei mediapad t2 70 latest update new
If you want to ensure you are on the very final, most recent software, follow these steps: If you still rely on this tablet for daily casual use—yes