One thing notable about Candlish is that he has been deeply involved in the Manual of Style Wars. He was blocked in one instance, as noted by Carrite, but Wikipedia's scatter-brained way of logging actions against editors makes it difficult to identify when someone has history with a topic.
As MOS fights are mysteriously controversial, there are discretionary sanctions in place on the topic and Candlish has some history with those. In 2013 he was given a one-month topic ban
by Sandstein after filing a report
against an opponent that mostly cited year-old actions. The next year he was given three-month restriction
on page moves in a community discussion that was later modified
to allow him to move pages he created or in his own userspace. Candlish's block
by Future Perfect appears to be a response to page moves he made after that restriction expired. Another topic ban, two months, was imposed on him
the next year by Future Perfect for edit-warring over MOS issues.
Most interesting about that last one is it was lifted
shortly before it was set to expire, with the admin doing it saying it was retro-actively applied to the day of the request for lifting it. What is interesting is part of the frustration there was Future dodging any attempt at discussing the topic ban at AN
for a month despite clearly being active
and being notified
. This was after repeated attempts by Candlish to get Future Perfect to clarify the bounds of the topic ban and Perfect said he would reply "tomorrow
" then didn't say anything at all. Candlish does have some history of sanctions beyond the one block and probably wouldn't have a serious chance either way, but the last instance is definitely one where he had legitimate cause for frustration.