Earlier quoted context omitted.
Like how many UK businesses and individuals had to give up their .eu domain name after leaving the EU.
I'm really surprised they didn't do the logical thing and grandfather all existing domains in when the UK left the EU. It seems like the policy was simply designed to frustrate as many people as possible for no real gain for the EU.
Your surprise exactly reflects the typical beliefs of a Brexit supporter, you thought the idea is you get to keep all the benefits you had before, and also you get rid of any downsides you didn't like, and somehow it's the EU's job to help you achieve this after you leave.
That didn't make any sense in 2016, and it still didn't make any sense in 2020, and so unsurprisingly here we are in 2021 and it isn't what happened. "We told you so" is boring but it's true. We told you so.