To my research, a sudden increase in no-follow backlinks won’t hurt your site’s SEO. Instead, it might help [marginally] improve your site's rankings in Google search results.
Google algorithm assesses various hints while rewarding SEO ranking if the content is unique in such instances.
[Generally, a no-follow backlink is a link that doesn't pass Page Rank or link juice to your site or page]
Here's related information that you may find helpful - 29 Key Findings Data from the State of Link Building 2022 Report that might help to strengthen your SEO skills and marketing decisions.
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