I don't think is really true, literally go to Google jobs/LinkedIn and type in new grad software engineer. There are thousands of open positions, all exclusively for new college graduates.
I don't know about google search results, which I wouldn't trust for something like this. But I just logged back into indeed, searched 'new graduate software engineer' and the vast majority, as in nearly every ad, was a thinly veiled recruiter ad, or an internship, or was an irrelevant result; 7+ years experience required in the first 3 results and many more in successive results. This has been my experience on similar job boards.