I knew there was a drop-off from 2018 to 2020, though obviously I didn't have it represented in graph form. You could just tell from the Services section that sig campaigns were in danger of dying off, because there weren't as many new ones being started.
Again, props to OP for compiling the charts.
The altcoin section is full of shit projects. Recently some new member emerges from the grave who doesn't value signature campaign and most of their marketing is based on social media. USDT and BTC paid campaign are very low in the service section and most of the existing project is old. If members lose earning opportunities then most people will leave these places expect those who are really here for the BTC not earning.
This place could be a dead cat if the new bounty campaign stop coming. Thought this is the best place but this is not the only place now where people can discuss or learn about bitcoin.