In what you wrote, there is a place to be, but partially. The bitcoin talk forum effectively promotes projects through signatures. First of all, this is due to the profile and narrow focus of the forum. It discusses the basics, development and promotion of projects by people who have knowledge since the inception of blockchain and cryptocurrencies. Therefore, social networks are thieves in importance.
The more signatures discussed will be displayed, which also means that people will see more signatures. People who skim through the project will decide whether or not to invest in it.
Isn't the purpose of the signature program to sell a lot of tokens and attract the community? So if it's a bad project, who will buy it? The most important issue is whether the project itself is good enough or not.