Blockchain is still a technology used and understood by few users, is not friendly and has high costs and poor performance. Blockchain 3.0 is on its way to solving these major problems and spreading the blockchain to the whole world. There are over 47K people in ArcBlock's Telegram Channel.
Anyway,do your own reasearch, check out its website(https://www.arcblock.io/) , team and whitepaper, watch the Ian Balina's AMA and the Suppoman review in youtube and other sources of information as well.
In my opinion, sometimes it is better not to listen to any advice, but make your own decision and pick an ICO yourself. You will spend much time for it, but it is worth doing the stuff. This information will be helpful: https://www.listico.io/
In my opinion the source you provided is not very trustful