Hate to be the bearer of bad news, but backlinks has never been less important for SEO than they are right now.

Google has slowly de-prioritized them as a ranking signal over time due to the constant abuse, the death of the blogosphere (the vast majority of websites are now corporate blogspam with few legitimate organic links), and the fact that every major social platform now de-ranks posts with external links in them (to keep people on-site).

And as far as I know the crawlers in LLMs don't use backlinks as a signal at all.