XX coin's BTC based signature campaign must be the first one since 2019 January for an altcoin/ICO. (I am sure I am 99% accurate there was no single signature campaign for ICOs/altcoins in 2019 with BTC payments).
I may think if you are wrong about that, there were several campaigns who have been running in the past just like credit, tachyon, Vite, Sessia, and many more. Nexo is the first campaign in 2019 who was running bitcoin campaign. If you mean about the first ico in 2020 that runs bitcoin campaign and that must be 99% accurate.
OP, there are also some good campaigns and AFAIK if some campaigns already listed on the market. That's better to do deep analysis and pick those who have already traded on the exchange site as your priority to join in the campaign.
yes, it is true that the ICO project currently looks lonely, especially for the signature campaign slot. there are only a few projects that accept slots for signature campaigns.
I haven't noticed this, maybe due in part that I have currently no interest whatsoever in what goes on with ICOs, if they no longer or have fewer Signature campaign ICOs is not a bad news for me as I am concerned with the amount of garbage many of their participants "dump" in here, giving moderators heavier tasks to do. They can stick with the social media bounties imo.
Social media bounties have already flooded with thousands of bots. it's not so effective as those people said. Even some accounts related to the social media bounties keep posting while the campaign has already ended.