this article covers the history https://www.standard.co.uk/lifestyle/london-life/bonfire-night-2019-guy-fawkes-fireworks-a4273351.html
I think as the UK population enjoys a more affluent lifestyle... people seem to have what they want when they want it, to excess in a lot of cases.... instead of just having one night of a celebration it now seems to go on and on, people can afford to have fireworks whenever they want , for birthdays, weddings, new year, any celebration...
maybe just for the joy of it - I do have a friend who loves , really loves fireworks, and will buy expensive amazing fireworks for her bonfire night.
if it was just one night I would likely love them too... however this constant night after night for weeks, and having an old cat with a heart murmur who is terrified.... this makes me fed up and grumpy.
and once this weekend is over, those fireworks available in the shops will go onto a reduced price sale: so the next couple of weeks will also be full of unexpected explosions.