Comment by mellonaut

This used¹ content from logoipsum who explicitly state you cannot use their logos for this purpose:

"You can not:

Re-distribute/re-package as means of creating similar logo placeholder website to Logoipsum.com and/or similar to Logoipsum Figma Plugin."

see: https://logoipsum.com/license/

1. edit: This originally said 'uses' but the author changed it as soon as they were made aware.