Imgur's business model is ad sales and tracking users - that inherently requires collecting and protecting data, including vulnerable groups like children. Even if the UK rules are imperfect or possibly overbroad (I haven't read them), if a company choose to operate where a law applies, it's on the company to follow it or to challenge it through the courts, not to blame the regulator after the fact.
Because the law is dumb and it is our moral imperative to not just ignore but break dumb laws