The rules are there for a reason- to protect us. Drakeford said hed rather wait a few more weeks in which time, a greater percentage the population would have been vaccinated. His more cautious approach has been shown to be effective. Boris's less cautious approach has him ignore the scientists in the autumn who advised a lockdown, and him allowing a 10 day window for travellers to enter the country from India, bringing the Delta variant with them.
If you think its Wales's quarantine rules that are stupid, and not England's, then previous experience would suggest it's the other way around.