Short articles, prevailing on the channel, can be a good choice for 'Picture Gallery' if they’re going to gain their audience’s sympathy with brevity. Also, there are medium-length pieces making up more than a quarter of all articles.
Advanced readability level of 'Picture Gallery' content is probably targeted at well-educated subscribers as not all readers might clearly understand their texts. There are also some articles with medium readability level.
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).