It's interesting that the tweet says summonsed rather than issued with a fixed penalty notice.
Whilst I have had some sympathy with the message underlying some of the tweets (though not voiced clearly enough), e.g. perhaps Kinnock could have made clearer that he didn't just pop round to Neil to wish him a happy birthday and perhaps the police talking about people driving from Sheffield to the Peak District could have explained that if it's okay for a few to do it then it becomes okay for loads to do it and we end up with the scenes from the other weekend, the above just risks the whole thing collapsing.
If it becomes people being summonsed on the whims of individual officers who can't be held to account or who themselves are using the flexibility of the regulations (in their view) in order to issue a summons or a fixed penalty notice then we risk being in a situation where no one takes notice of the reasonable and sensible overall advice and it becomes a free-for-all again.
Also, longer lasting effects upon trust in the police applly, too.
More sense is needed by the general public in understanding and adhering to both guidelines and regulations/legislation, and by the police in administering the guidelines, regulations and legislation.
Edit: It also risks overwhelming already-stretched court resources either in the immediate future or at some point when the restgrictions are eased/lifted.