10 bucks is not that much and is not mandatory. It has some benefits and perks that if someone wants it, they can get premium, if not, not having it won't affect how they use threads, since premium adds, it doesn't take away.
If you have an inactive account, do not engage, produce bad content, etc, many factors can lead to be "unpopular" and getting low votes. Premium will give you visibility but conversions depend on your own actions.
Also, I saw the screenshot you shared, from another user, that is not all the numbers so not a good reference.
Thanks a lot for your attention, yeah I agree with you, it is not a big number for me actually but it is also true that premium is not mandatory to have. Actually, I am not used to "Inleo" but I will try it for a while and if possible definitely get the premium for the sake of the bigger benefits of the community.