Fundamentally, the question is like asking if HTTP2 is going to kill SEO. The question betrays a fundamental gap in knowledge of the tech stack. It reminds me of the narrow concepts of SEO that a lot of people on WMW had so much trouble getting past (i.e. they thought that anti-spam measures against keyword stuffing would "kill SEO" and that Google was therefore "against small businesses" and "hated SEOs").
If someone wants to get found, they will by definition not serve their website using any technology that does not allow it to be crawled and indexed.
This comment was very nice and charitable
QuoteI think you might not understand what some claim the web3.0 is, and I don't blame you - this is not a criticism.
Frankly... you are selling professional SEO services. Poor knowledge of how websites work is... well... a criticism.