The posts contain no original content. They are minimum-effort posts. Half of the post is a cookie recycled content from the previous post and the second half is copied and pasted links to YT videos and copied and pasted descriptions from Wikipedia.

Moreover, the giveaway value is next to worthless. 10000 Starbits are worth 0.6 Hive. Each of these posts farms $3-5.
Also, vote trading.
It is a farm with spam content.

Giveaway means giving away for free so either decline rewards on these posts or completely stop that farm.