CMS Load is creating a new page every time my Load More button is pressed, is this native Webflow behavior or is it from the CMS Load script?
This is Native behavior, you will get this with either native load more or attributes, each page query combination returns html that contains the Collection Items for that specific page of the Collection. If you are worried about crawling, you could try to add rel=nofollow to the Next and Previous buttons and submit your sitemap.xml to Google Search Console so the bots can still discover the Collection Items from there.
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CMS Load is creating a new page every time my Load More button is pressed, is this native Webflow behavior or is it from the CMS Load script?
This is Native behavior, you will get this with either native load more or attributes, each page query combination returns html that contains the Collection Items for that specific page of the Collection. If you are worried about crawling, you could try to add rel=nofollow to the Next and Previous buttons and submit your sitemap.xml to Google Search Console so the bots can still discover the Collection Items from there.