Questions:
1) Do you clean brand new records as a matter of course?
2) Is cleaning a thing to be done regularly or once a record is clean it stays clean, given proper handling?
1. Yup for sure - brand new records can be quite dirty. In the video she opened up 2 sealed records that were certainly not clean.
Most record manufacturing plants have lots of dust and debris. Also, since many new records come in paper sleeves, that deposits a lot of fibres and dust onto the record. And sometimes there are some minerals and chemicals left over from the vinyl making process.
But I find that for most new records, the clean up quite easily compared to old used ones.
Important to not put the clean new record back into the sleeve that it came in! Put the records into a new fresh sleeve.
2. As long as I keep my turntable clean, and the stylus clean, I don't re-clean my records regularly once I've done a full cleaning.
In the PACVR manual that I linked above, Neil describes how to make a Teflon wand that can be used to pick up dust that may collect on the record.
Hope that helps!