https://assets.publishing.service.gov.u ... PRIIPs.pdf
does indicate that KIID's are a joke and the desire to restore UK investors being able to buy the likes of US ETF's where otherwise absence of EU required KIID prevented your broker from being able to sell/trade in such for you.
5.3 A key problem with the PRIIPs Regulation is the impact on retail investor choice as outlined in Chapter Two. Given the government’s commitment to fair and open capital markets, a key ambition in this area will be to continue improving choice of investment products for retail investors, particularly with respect to popular international investment products such as US-based ETFs.