The point was that this was a change that required an explicit act by parliament to happen, i.e. they made a concious choice to increase the limits. The laws did not automatically revert/change when brexit was decided.

So the timeline is: UK as part of EU adopts the regulation into national law. UK leaves EU, national law is unchanged by this (so regulation persists). UK makes a new national law changing the amount of pesticide residue allowed to be higher.

Am on mobile please excuse typos

Hotel guests are not the same as tenants in a rental home though.

Shouldn’t this apply to software in general?

Unless the license specifically is for a limited amount of time, and priced accordingly, usability should be ensured. I.e. you can make sth unplayable in the future, but then you are not allowed to price it as if it was usable in perpetuity and have to include the expected usable duration in marketing materials.