It's likely that more people are reading things than just the comments on IDF indicate. For example, there are currently 33 members, 6 anonymous, and 93 guests online. A few minutes ago, the number of guests was 156. Regardless, we don't know how many AI or TV voters are informed by media articles or sites like IDF and how many are casual viewers of the shows who vote based on what they see during the episode. Casual viewers are probably more easily influenced by manipulation from TPTB such as performance order, song choice, editing, judge critiques, etc.
Yes, local support for a contestant can have a big impact on the outcome. And Emmy has another advantage over the rest of the Top 12: a famous grandmother who had a very successful country music career.