Moving to Coingecko is a choice and "trending" doesn't translate to top-rated overall, Bitcoin is the best. Though strange, Bitcoin may not be in the 100 trending position everyday, especially this time that it's selling.
No one will want to check bitcoin all the time because it is listed at the top part of the site. Bitcoin is always trending and has more trading volume that those shit coins that are listed on the page that is not visible but people will want to search and look for them on the site. They are just using it to make people fall for their ponzi scheme in a way the coins will pump an later get dumped.