If the quality of the Dhamma was determined by popular vote, then this may have some practical use.
However, since realistically it's not, this functionality is only likely to create tension and turn the art of posting into a popularity contest.
That said, I don't know how we could do it even if we wanted to... I'm not sure the platform supports it.
Through corruption of the Dhamma comes corruption of the discipline, and from corruption of the discipline comes corruption of the Dhamma. This is the first future danger as yet unarisen that will arise in the future. You should recognize it and make an effort to prevent it. (AN 5.79)
Neither traceable in the Discourses nor verifiable by the Discipline, one must conclude thus: 'Certainly, this is not the Blessed One's utterance; this has been misunderstood by that bhikkhu — or by that community, or by those elders, or by that elder.' In that way, bhikkhus, you should reject it. (DN 16)