There is no 'spirit of the lockdown'. There is the law. Those who keep wanging on about this 'spirit' are usually the same people who like to interpret the law however it best suits - be they posters on MN, some police forces, Facebook busybodies or the local neighbourhood curtain twitchers.
You may leave your home for limited reasons including shopping, medical reasons, caring, work you cannot do from home or daily exercise. The law, in a very simplified nutshell. That's all you need to know.
The Spirit Of The Lockdown does not exist so stop invoking it and judging others for not adhering to this mythical nonsense.