I just want to say that it will not be superfluous. besides, it's not very expensive. seo is absolutely an obligatory thing in modern business at all.
The thing is, some SEOs tend to overdo it, making ads too frequent and flashy, causing people who see the ads to actually despise the project that is being advertised.
SEO, it's not working with contextual advertising, do not confuse it. SEO will keep your site in the top of search and as you know, nobody goes further than the second page on Google. That's why it's important at all. For now PRE-ICO etc nobody cares, but in the future
it's important