Short articles, prevailing on the channel, can be a good choice for 'Topix' if they’re going to gain their audience’s sympathy with brevity. Also, there are a few medium-length pieces.
Advanced readability level of 'Topix' content is probably targeted at well-educated subscribers as not all readers might clearly understand their texts. There are also articles with medium readability level, which make more than a quarter of the channel’s content.
Neutral sentiment normally indicates an unbiased attitude that prevails in the channel’s articles (e.g. it may include some kind of scientific or professional materials).