I imagine the site’s bot-detectors had a false positive (imagine that!). McCartney’s account had only posted once before and then remained dormant for a number of years. Suddenly, the account woke up again and surely must have gained an unusually rapid number of upvotes due to the celebrity status and the fandom subreddit. Looking at this data without any context, white-listing of accounts, or human eyes, this could potentially trigger their automated ban system. Additionally/alternatively, sharing Dropbox links seems to be an unspoken no-no on the site?

I would think logarithmic given that one of the units is dB

First try, random letter

To see if I could

Spooky Tooth’s 1970 album “The Last Puff” has no performers in common with their 1974 album “The Mirror”.

The band Foreigner’s only constant member is Mick Jones (incidentally also from Spooky Tooth), but he was absent from some modern tours.

I think Yes also had a period in which there were no commonalities with the original lineup.

A bit like Roger Waters

They fly now

Dolphins?

When was the last time that people who banned others based on country of origin were the good guys?