Follower counts can be bought, inflated by contests, or built entirely around content that has nothing to do with local market knowledge. A polished video does not verify a single closed sale, a single satisfied client, or a single dollar of value added to a seller's outcome.
Ask instead for closed sales in your own neighbourhood over the last 12 months, and read reviews for pattern and specificity rather than volume. Joel Dyck holds 72 five star Google reviews, and the useful test is whether the situations described sound like yours, not how large any single platform's audience is.
A conversation with an agent about your actual property tells you more in ten minutes than a feed does in a year. Get your hand-reviewed valuation from Joel Dyck.