...
That website was launched in 2018 just after bitcoin hit $20k in December 2017 and ICO projects were springing up from all corners and would have been using the forum as a platform to advertise themselves. It is not a surprise that the activity then is way higher than it is now, we have not had that type of hype since then.
The admin has never tried to affect the ranking on search engines, all the activity here is organic.
- Jay -