Let's keep it simple
The terms of Vector Guild are simple. We want you to download and use these vectors in interesting and useful ways. And you're more than welcome to do so! What can you not do? You may not redistribute these elements. Posting these elements for download or use on your own site or service is a no no.
The collaborators or Vector Guild are happy to share their talents with you. We encourage you to respect the work they've done. If you feel compelled, reach out to them and let them know what you've done with their vectors.
If you have any questions just ask!